Bài 1: Tính
3/5 + 4/3 x 5/6 2 - 7/6 + 1/3 7/6 x 3 - 3/5
giúp mình với, trả lời mình tick cho
Tìm x phân số:
a. x + 3/10 = 4 - 7/8
b. 5/7 + x/35 = 4/5
giúp mình với, trả lời mình tick
a. x + 3/10= 25/8
x = 25/8-3/10
x = 113/40
b. x/35 = 4/5-5/7
x/35 = 3/35
vậy x=3
\(x+\dfrac{3}{10}=4-\dfrac{7}{8}\)
\(x+\dfrac{3}{10}=\dfrac{25}{8}\)
\(x=\dfrac{25}{8}-\dfrac{3}{10}\)
\(x=\dfrac{113}{40}\)
\(\dfrac{5}{7}+\dfrac{x}{35}=\dfrac{4}{5}\)
\(\dfrac{x}{35}=\dfrac{4}{5}-\dfrac{5}{7}\)
\(\dfrac{x}{35}=\dfrac{3}{35}\)
=>x=3
Tìm x phân số:
a.3/4 : 6/x = 5/4 b.(x + 7/4) x 2/3 = 6
giúp mình với nhé, trả lời mình tick cho nhá
\(a,\dfrac{3}{4}:\dfrac{6}{x}=\dfrac{5}{4}\\ \dfrac{6}{x}=\dfrac{3}{4}:\dfrac{5}{4}\\ \dfrac{6}{x}=\dfrac{3}{5}\\ x=6:\dfrac{3}{5}\\ x=10\\ b,\left(x+\dfrac{7}{4}\right)\times\dfrac{2}{3}=6\\ x+\dfrac{7}{4}=6:\dfrac{2}{3}\\x+\dfrac{7}{4}=9\\ x=9-\dfrac{7}{4}\\ x=\dfrac{29}{4}\)
giúp mình đi, sao dạo này ít ngừi giúp qué zại
a) \(\dfrac{3}{4}\div\dfrac{6}{x}=\dfrac{5}{4}\)
\(\dfrac{6}{x}=\dfrac{3}{4}\div\dfrac{5}{4}\)
\(\dfrac{6}{x}=\dfrac{3}{5}\)
\(x=\left(6\div3\right)\times5\)
\(x=10\)
b) \(\left(x+\dfrac{7}{4}\right)\times\dfrac{2}{3}=6\)
\(x+\dfrac{7}{4}=6\div\dfrac{2}{3}\)
\(x+\dfrac{7}{4}=9\)
\(x=9-\dfrac{7}{4}\)
\(x=\dfrac{29}{4}\)
Bài 1:cho giá trị của biểu thức
A= (7-3/4 + 1/3) - (6+ 5/4 - 4/3) - (5-7/4 + 5/3)
hãy tính giá trị biểu thức.
Bài 2:Thực hiện hép tính sau một cách hợp lí
a, 1/3 . -4/5 + 1/3 . -6/5
giúp mình với ạ
2:
a: \(=\dfrac{1}{3}\left(-\dfrac{4}{5}-\dfrac{6}{5}\right)=-\dfrac{1}{3}\cdot2=-\dfrac{2}{3}\)
1:
\(A=7-\dfrac{3}{4}+\dfrac{1}{3}-6-\dfrac{5}{4}+\dfrac{4}{3}-5+\dfrac{7}{4}-\dfrac{5}{3}\)
\(=-4-\dfrac{1}{4}=-\dfrac{17}{4}\)
Bài 1:
\(A=\left(7-\dfrac{3}{4}+\dfrac{1}{3}\right)-\left(6+\dfrac{5}{4}-\dfrac{4}{3}\right)-\left(5-\dfrac{7}{4}+\dfrac{5}{3}\right)\)
\(A=7-\dfrac{3}{4}+\dfrac{1}{3}-6-\dfrac{5}{4}+\dfrac{4}{3}-5+\dfrac{7}{4}-\dfrac{5}{3}\)
\(A=\left(7-6-5\right)-\left(\dfrac{3}{4}+\dfrac{5}{4}-\dfrac{7}{4}\right)+\left(\dfrac{1}{3}+\dfrac{4}{3}-\dfrac{5}{3}\right)\)
\(A=-4-\dfrac{3+5-7}{4}+\dfrac{1+4-5}{3}\)
\(A=-4-\dfrac{1}{4}+\dfrac{0}{3}\)
\(A=-\dfrac{16}{4}-\dfrac{1}{4}+0\)
\(A=\dfrac{-16-1}{4}\)
\(A=-\dfrac{17}{4}\)
Bài 2:
\(\dfrac{1}{3}\cdot-\dfrac{4}{5}+\dfrac{1}{3}\cdot-\dfrac{6}{5}\)
\(=\dfrac{1}{3}\cdot\left(-\dfrac{4}{5}-\dfrac{6}{5}\right)\)
\(=\dfrac{1}{3}\cdot\dfrac{-4-6}{5}\)
\(=\dfrac{1}{3}\cdot\dfrac{-10}{5}\)
\(=\dfrac{1}{3}\cdot-2\)
\(=-\dfrac{2}{3}\)
Tìm x
x - 4/5 = 3/7
x + 3/7 = 4/5
19/20 - x = 8/5 - 3/4
4/5 x X = 6/9 - 4/7
x : 7/9 = 6/8
2/3 - x/6 = 6/18
nhanh lên giúp mình với, ai thích và trả lời milk sẽ tick đúng
x - 4/5 = 3/7
x = 3/7 + 4/5
x = 43/35
x + 3/7 = 4/5
x = 4/5 - 3/7
x = 13/35
19/20 - x = 8/5 - 3/4
19/20 - x = 17/20
x = 19/20 - 17/20
x = 2/20 = 1/10
4/5 x X = 6/9 - 4/7
4/5 x X = 2/21
x = 2/21 : 4/5
x =5/42
x : 7/9 = 6/8
x = 6/8 x 7/9
x = 7/12
2/3 - x/6 = 6/18
x/6 = 2/3 - 6/18
x/6 = 1/3
x/6 = 2/6
=> x =2
1. x = 43/35
2. x = 13/35
3. x = 1/10
còn lại tự tính nhá
tui bận òi
tìm x,y
x- y= 12345
x:y= 6:5
1/3 + X/3 x 1/6 = 7/18; 4/7 : X x 3/2 + 1/7 = 13/7
mình sẽ tick cho những ai trả lời được những câu hỏi này.
=X/46 +7/25=36,78/80
bài:1 A.1+1=? B.6+2+5= C.6+4+6+2+7= D.6+4+7+8=
bài 2:A.x+2=3 B.x+5=4+6 C.7=4+x D.4+x=(3+5+7)+(3+5)
giúp mình với tối nay mình phải đi học
B1:
A.1+1=2
B.6+2+5=13
C.6+4+6+2+7=25
D.6+4+7+8=25
B2:
A.x+2=3
x=3-2
x=1
B.x+5=4+6
x+5=10
x=10-5
x=5
C.7=4+x
x=7-4
x=3
D.4+x={3+5+7}+{3+5}
4+x=15+8
4+x=23
x=23-4
x=19
Bài 1 :
A.1+1=2
B.6+2+5=13
C.6+4+6+2+7=25
D.6+4+7+8=25
Bài 2 :
A.x+2=3
x=3-2
x=1
B.x+5=4+6
x+5=10
x=10-5
x=5
C.7=4+x
x=7-4
x=3
D.4+x={3+5+7}+{3+5}
4+x=15+8
4+x=23
x=23-4
x=19
Chúc bạn học tốt nha ~_~
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Tìm y phân số:
a. y : 2/3 = 4/9 x 3
b. 5/6 + y/12 = 7/6
giúp mình với, trả lời mình tick cho
\(a.y:\dfrac{2}{3}=\dfrac{4}{9}\times3\\y:\dfrac{2}{3}=\dfrac{4}{3}\\ y=\dfrac{4}{3}\times\dfrac{2}{3}\\ y=\dfrac{8}{9}\\ b.\dfrac{5}{6}+\dfrac{y}{12}=\dfrac{7}{6}\\ \dfrac{y}{12}=\dfrac{7}{6}-\dfrac{5}{6}\\ \dfrac{y}{12}=\dfrac{2}{6}\\ y\times6=12\times2=24\\ y=24:6\\ y=4 \)
\(a,y:\dfrac{2}{3}=\dfrac{4}{9}.3\)
\(y:\dfrac{2}{3}=\dfrac{4}{3}\)
\(y=\dfrac{4}{3}.\dfrac{2}{3}\)
\(y=\dfrac{8}{9}\)
\(b,\dfrac{5}{6}+\dfrac{y}{12}=\dfrac{7}{6}\)
\(\dfrac{y}{12}=\dfrac{7}{6}-\dfrac{5}{6}\)
\(\dfrac{y}{12}=\dfrac{2}{6}\)
\(y.6=12.2\)
\(y.6=24\)
\(y=24:6\)
\(y=4\)
6/5 + 6/35 - 6/125 - 6/2009 - 6/2011
7/5 + 7/35 - 7/125 - 7/2009 - 7/2011
tìm x
3x ( 2x +1 ) = 0
2/3 -1/3 ( x-3/2 ) - 1/2(2x + 1 ) =5
câu đầu tiên là phân số nhé mn
mình sẽ tick cho ai có câu trả lời nhanh nhất
nhưng phải giải chi tiết hộ mình nha
\(3x\left(2x+1\right)=0\)
\(\Rightarrow\orbr{\begin{cases}2x+1=0\\3x=0\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}2x=-1\\x=0\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=-\frac{1}{2}\\x=0\end{cases}}\)
\(\frac{\frac{6}{5}+\frac{6}{35}-\frac{6}{125}-\frac{6}{2009}-\frac{6}{2011}}{\frac{7}{5}+\frac{7}{35}-\frac{7}{125}-\frac{7}{2009}-\frac{7}{2011}}\)
\(=\frac{6.(\frac{1}{5}+\frac{1}{35}-\frac{1}{125}-\frac{1}{2009}-\frac{1}{2011})}{7.(\frac{1}{5}+\frac{1}{35}-\frac{1}{125}-\frac{1}{2009}-\frac{1}{2011})}\)
\(=\frac{6}{7}\)
Tìm x
\(a,3x(2x+1)=0\)
\(\Rightarrow\hept{\begin{cases}3x=0\\2x+1=0\end{cases}}\)
\(\Rightarrow\hept{\begin{cases}x=0\\x=\frac{-1}{2}\end{cases}}\)
Vậy \(x=0\)hoặc \(x=\frac{-1}{2}\)
\(b.\frac{2}{3}-\frac{1}{3}(x-\frac{3}{2})-\frac{1}{2}(2x+1)=5\)
\(\frac{2}{3}-\frac{1}{3}x+\frac{1}{2}-x-\frac{1}{2}=5\)
\(\frac{2}{3}+\frac{1}{2}-\frac{1}{2}-x(\frac{1}{3}+1)=5\)
\(\frac{4}{3}x=\frac{2}{3}-5\)
\(\frac{4}{3}x=\frac{-13}{3}\)
\(x=\frac{-13}{3}\div\frac{4}{3}\)
\(x=\frac{-13}{4}\)
Chúc ban học tốt
\(\frac{\frac{6}{5}+\frac{6}{35}-\frac{6}{125}-\frac{6}{2009}-\frac{6}{2011}}{\frac{7}{5}+\frac{7}{35}-\frac{7}{125}-\frac{7}{2009}-\frac{7}{2011}}\)
\(=\frac{6.\left(\frac{1}{5}+\frac{1}{35}-\frac{1}{125}-\frac{1}{2009}-\frac{1}{2011}\right)}{7.\left(\frac{1}{5}+\frac{1}{35}-\frac{1}{125}-\frac{1}{2009}-\frac{1}{2011}\right)}=\frac{6}{7}\)
Tìm x
a)bạn tự làm vì nó rất dễ nha
b)\(\frac{2}{3}-\frac{1}{3}.\left(x-\frac{3}{2}\right)-\frac{1}{2}.\left(2x+1\right)=5\)
\(\frac{2}{3}-\frac{1}{3}x-\frac{1}{2}-\frac{1}{2}.2x-\frac{1}{2}=5\)
\(\frac{2}{3}-\frac{1}{3}x-\frac{1}{2}-\frac{2}{2}x-\frac{1}{2}=5\)
\(\frac{2}{3}-\frac{1}{3}x-\frac{1}{2}-x-\frac{1}{2}=5\)
\(\frac{1}{3}x-x=5+\frac{1}{2}+\frac{1}{2}+\frac{2}{3}\)
\(\left(\frac{1}{3}-1\right)x=5+1+\frac{2}{3}\)
\(\frac{-2}{3}x=6+\frac{2}{3}\)
\(\frac{-2}{3}x=\frac{20}{3}\)
\(x=\frac{20}{3}:\left(\frac{-2}{3}\right)\)
\(x=\frac{20}{3}.\left(\frac{3}{-2}\right)\)
x=-10
Vậy x=-10
Chúc bạn học tốt
(1+35-36)x(1+2+3+4+5+6+7+8+9+10)=?
Dể lắm ai trả lời được mình tick cho.