Question

Найдите корни уравнений 4/7(х-1)=2/7+х

Answer 1

$\frac{4}{7}x- \frac{4}{7} = \frac{2}{7}+x$
Сокращаем числа на 7:
4x-4=2+7x
4x-7x=2+4
-3x=6
x=-2

Answer 2

4/7х - 4/7 - х = 2/7
4/7х - 7/7х = 2/7 + 4/7
- 3/7х = 6/7
х = 6/7 : (- 3/7) = 6/7 • ( - 7/3) = -2