\(x+\dfrac{4}{5}=\dfrac{45}{4}-\left(\dfrac{7}{5}+\dfrac{3}{5}\right)\)
\(\Rightarrow x+\dfrac{4}{5}=\dfrac{45}{4}-\dfrac{10}{5}\)
\(\Rightarrow x+\dfrac{4}{5}=\dfrac{45}{4}-2\)
\(\Rightarrow x=\dfrac{45}{4}-2-\dfrac{4}{5}\)
\(\Rightarrow x=\dfrac{225}{20}-\dfrac{40}{20}-\dfrac{16}{20}\)
\(\Rightarrow x=\dfrac{225-40-16}{20}=\dfrac{169}{20}\)
A X + 4/5= 45/5 -( 3/7 + 3/5)
B. 5/7 + X/35 = 4/5
Tính x biết
A X + 4/5= 45/5 -( 3/7 + 3/5)
B. 5/7 + X/35 = 4/5
a,\(x\)\(+\)\(\dfrac{4}{5}\)=\(\dfrac{45}{4}\)\(-\)\((\)\(\dfrac{7}{5}\)+\(\dfrac{3}{5}\)\()\)
b,\(\dfrac{5}{7}\)+\(\dfrac{x}{35}\)=\(\dfrac{4}{5}\)
12:05
x + 4/5 = 45/5 - [3/7 + 3/5]
b1 : rút gọn rồi tính
a, 2/5 + 9/5
b, 15/45 + 25/30
c,28/32 + 45/72
d,8/28 + 5/30
b2 : tìm x
a, x - 4/5 = 4/5 + ( 3/7 + 3/5 )
b, x - 7/35 = 4/5
/ là phần
Tính nhanh các biểu thức sau :
a) (45 – 5 x 9) x 1 x 2 x 3 x 4 x 5 x 6 x 7
b) (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10) x (72 – 8 x 8 – 8)
c) (36 – 4 x 9) : (3 x 5 x 7 x 9 x 11)
d) (27 – 3 x 9) : 9 x 1 x 3 x 5 x 7
x+4/5=45/5-(3/7+3/5) =? Giải cầu này hộ mình
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4
bài1; tính
a,5/7 ; 45 /28=
b,3/8 x 4/9 : 3=
bài2;
a,60 x ( 7/12 + 4/15 )
b,1/2 x2/3 x3/4 x 4/5 x 5/6 x 6/7 x 7/8 x 8/9
