Question

решите уравнение х-5\7=5\35, 6,25x-2,5x=22,5

Answer 1

$x - \frac{5}{7} = \frac{5}{35}$
$x = \frac{5}{35} + \frac{5}{7}$
$x = \frac{5}{35} + \frac{25}{35}$
$x = \frac{30}{35}$
2)
6.25х-2.5х=22.5
3.75х = 22.5
х = 22.5:3.75
х = 6