(9/2-2x)x1 4/7=11/14
Tìm x, biết
a,(2x-4,5)x1 4/7=-11/14
b,|x/7|+6\24
c,60%x+2/3x+1/3.6 1/3
d,|2x-1/3|+5/6=1
( 9/2 - 2x )× 11/7 = 11/14
tìm x biết :
a, 1/2x - 3/4 = 14/9 .3/7
b, (4,5 -2x ) (-1 4/7 ) =11/14
( -1 4/7 là hỗn số nhà)
(9/2-2x )×(-1/4/7)=11/14
Các bạn giải chi tiết hộ mình nha
( 9/2 - 2x ) × ( -1/4 /7 ) = 11/14
Giải chi tiết hộ mình nha. Đúng mình tick cho
\(GIẢI\)
\((\frac{9}{2}-2x)\times\frac{-11}{7}=\frac{11}{14}\)
\(\frac{9}{2}-2x=\frac{11}{14}:\frac{-11}{7}\)
\(\frac{9}{2}-2x=\frac{-1}{2}\)
\(2x=\frac{9}{2}-(\frac{-1}{2})\)
\(2x=5\)
\(x=5:2\)
\(x=2,5\)
Tính:
a) \(\dfrac{1}{7}+\dfrac{2}{7}+\dfrac{3}{7}\) b) \(\dfrac{2}{9}+\dfrac{5}{9}+\dfrac{8}{9}\)
c) \(\dfrac{13}{14}-\dfrac{5}{14}-\dfrac{1}{14}\) d) \(\dfrac{7}{11}-\dfrac{4}{11}-\dfrac{3}{11}\)
a)x-3/7:9/14=7/3
b)(x-1/2):3/11=114
c)(2x+3/8).7/4=-21/32
d)x-x/2=3/57:9/14
mọi ơi giúp mik đi mik cần gấp
tính giá trị biểu thức
\(\left(\frac{17}{10}+7-8,7\right):\left(\frac{23}{4}-\frac{11}{2}+\frac{9}{25}\right)x\left(12,98x0,25\right)+12,5\)
\(1\frac{2}{24}x5\frac{2}{5}x2x3\frac{7}{9}x2x\frac{2}{17}\)
\(2\frac{2}{17}x1\frac{1}{24}x5\frac{2}{5}x3\frac{7}{9}x2\)
\(3x\left(\frac{1}{7}+\frac{1}{3}-\frac{3}{14}\right):\frac{11}{14}\)
\(\left(1\frac{3}{2}+2\frac{1}{5}\right)x1\frac{1}{10}+\left(1\frac{7}{10}-\frac{4}{5}\right):\frac{3}{7}\)
Giải phương trình
1) 16-8x=0
2) 7x+14=0
3) 5-2x=0
4) 3x-5=7
5) 8-3x=6
6) 8=11x+6
7)-9+2x=0
8) 7x+2=0
9) 5x-6=6+2x
10) 10+2x=3x-7
11) 5x-3=16-8x
12)-7-5x=8+9x
13) 18-5x=7+3x
14) 9-7x=-4x+3
15) 11-11x=21-5x
16) 2(-7+3x)=5-(x+2)
17) 5(8+3x)+2(3x-8)=0
18) 3(2x-1)-3x+1=0
19)-4(x-3)=6x+(x-3)
20)-5-(x+3)=2-5x
20) -5-(x + 3) = 2 - 5x ⇔ -5 - x - 3 = 2 -5x ⇔ 4x = 10 ⇔ x = \(\frac{5}{2}\)
Vậy...
1) 16 - 8x = 0 ⇔ 8(2 - x) = 0⇔ 2 - x = 0 ⇔ x = 2
Vậy phương trình có nghiệm là x = 2