Đáp án:
Giải thích các bước giải:
1)
$\dfrac{x}{12}$ = $\dfrac{-1}{24}$ - $\dfrac{1}{8}$
$\dfrac{x}{12}$ = $\dfrac{-1}{6}$
$6.x = -1.12$
$6x = -12$
$x = -2$
2)
$\dfrac{2}{3x}$ + $\dfrac{1}{6x}$ = -3$\dfrac{5}{8}$
$\dfrac{4}{6x}$ + $\dfrac{1}{6x}$ = $\dfrac{-28}{8}$
$\dfrac{5}{6x}$ = $\dfrac{-28}{8}$
$6x . (-28) = 5.8$
$-168x = 40$
$x =$ $\dfrac{-5}{21}$