Question

Tìm x

\(\dfrac{3}{4}x+\dfrac{-1}{2}=\dfrac{-13}{8}\)

\(\left|x\right|+0,25=1,75.3\)

\(\dfrac{2x-1}{3}=\dfrac{-5}{0,6}\)

Answer 1

a, \(\dfrac{3}{4}x=-\dfrac{9}{8}\)
x= \(-\dfrac{3}{2}\)
b, |x| + 0,25= 5,25
|x | = 5
=> x\(\in\){ +- 5}
Ko chắc đúng, kiểm tra trc khi làm

Answer 2

\(\dfrac{2x-1}{3}=\dfrac{-5}{0.6}\)

\(\Leftrightarrow2x-1=-25\)

hay x=-12