x - 1/4 = 7/2*(-3/5) x-1/4 =7*(-3)/2*5 x-1/4 = -(7*3)/10 x-1/4 = -21/10

* Hướng dẫn giải

$x-\frac{1}{4}=\frac{7.(-3)}{2.5}$

$x-\frac{1}{4}=\frac{-\left(7.3\right)}{10}$

$x-\frac{1}{4}=\frac{-21}{10}$

$x=\frac{-21}{10}+\frac{1}{4}$

$x=\frac{(-21).2}{10.2}+\frac{1.5}{4.5}$

$x=\frac{-42}{20}+\frac{5}{20}$

$x=\frac{-42+5}{20}$

$x=\frac{-37}{20}$

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