Question

Решите уравнения:
(Помогите завтра урок)

Answer 1

$a) \frac{1}{14}x- \frac{2}{7}*1 \frac{1}{4}= \frac{5}{56}$
$\frac{1}{14}x- \frac{10}{28}= \frac{5}{56}$
$\frac{1}{14}x= \frac{5}{56} +\frac{10}{28}$
$\frac{1}{14}x= \frac{25}{56}$
$x= \frac{25}{56}*14$
$x=\frac{25}{4}=6 \frac{1}{5}=6.25$

б)$80.1-0.1*x=31.9$
$80.1-31.9=0.1*x$
$0.1*x=48.2$
x=482