Question

Помогите пожалуйста с Алгеброй 7 клас
$- 6x = \frac{1}{3}$
$0.1x = - 2.75$
$\frac{1}{3} x = 12$
$\frac{5}{7} x = - \frac{10}{49}$
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Answer 1

1)

$- 6x = \frac{1}{3} \\ x=\frac {\frac {1}{3}}{-6}\\</p><p>x=-\frac {1}{18}$

2)

$0.1x = - 2.75\\</p><p>\frac {1}{10}x=-\frac {275}{100}\\</p><p>x=\frac {\frac {275}{100}}{\frac {1}{10}}\\</p><p>x=\frac {275*10}{100*1}\\</p><p>x=\frac {275}{10}\\</p><p>x=27.5$

3)

$\frac{1}{3} x = 12\\</p><p>x=12*3\\ x=36$

4)

$\frac{5}{7} x = - \frac{10}{49}\\</p><p>x=-\frac {\frac {10}{49}}{\frac {5}{7}}\\</p><p>x=-\frac {10*7}{49*5}\\</p><p>x=-\frac {2*1}{7*1}\\</p><p>x=-\frac {2}{7}$