\(\dfrac{-5}{x}=\dfrac{-18}{72}\Rightarrow x.\left(-18\right)=-5.7\)
\(x.\left(-18\right)=-35\)
\(x=-35:\left(-18\right)\)
\(x=\dfrac{35}{18}\)
Vậy \(x=\dfrac{35}{18}\)
- 18 . x = -5 . 72
- 18 .x = -360
x = -360 : -18
x = 20
bạn lấy -5 * 72 rồi chia cho -18
vì -5 * 72 = x * 18 ok