Question

. Tìm x:

a) |x|=18 

b) | x | = 3/5

c) x :(7/12 - 3/5)=2

Đang cần gấp cảm ơn trc

Answer 1

a: \(x\in\left\{18;-18\right\}\)

Answer 2

\(a,\Rightarrow\left[{}\begin{matrix}x=18\\x=-18\end{matrix}\right.\\ b,\Rightarrow\left[{}\begin{matrix}x=\dfrac{3}{5}\\x=-\dfrac{3}{5}\end{matrix}\right.\\ c,\Rightarrow x:\left(-\dfrac{1}{60}\right)=2\Rightarrow-60.x=2\Rightarrow x=-\dfrac{2}{60}=-\dfrac{1}{30}\)