Question

Реши уравнение.

Ответ: x =

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Answer 1

$-\tt\displaystyle\frac{3}{5}x+\frac{1}{4}x+\frac{4}{7}=-\frac{3}{7}$

$-\tt\displaystyle\frac{3}{5}x+\frac{1}{4}x=-\frac{3}{7}-\frac{4}{7}$

$-\tt\displaystyle\frac{12}{20}x+\frac{5}{20}x=-\frac{7}{7}$

$-\tt\displaystyle\frac{7}{20}x=-1$

$x=-1:\bigg(-\tt\displaystyle\frac{7}{20}\bigg)$

$x=1*\tt\displaystyle\frac{20}{7}$

$x=\tt\displaystyle\frac{20}{7}=2\frac{6}{7}$