Question

[Nguyen Thi Mỹ Ngoc]

Giúp với!

Tìm x thuộc Q

a)x/4=9/12

b)-8/3÷x=5/6

c)(3/4-x).10/3=2/5

Answer 1

[__Búp Bê Biết Khóc__]

a) \(\frac{x}{4}=\frac{9}{12}\)

\(\Rightarrow x=\frac{9}{12}\cdot4\)

\(\Rightarrow x=3\)

b) \(-\frac{8}{3}:x=\frac{5}{6}\)

\(\Rightarrow x=-\frac{8}{3}:\frac{5}{6}\)

\(\Rightarrow x=-\frac{16}{5}=-3,2\)

c) \(\left(\frac{3}{4}-x\right)\cdot\frac{10}{3}=\frac{2}{5}\)

\(\Rightarrow\frac{3}{4}-x=\frac{2}{5}:\frac{10}{3}\)

\(\Rightarrow x=\frac{3}{4}-\frac{3}{25}=\frac{63}{100}=0,63\)

Nhớ k mk đó nkoa!@^_^@! Love you

Answer 2

[Nguyen Thi Mỹ Ngoc]

Cảm ơn nha