8х + 2х + 5х = 90
15х = 90
х = 6
(8х) = 8 * 6 = 48
(2х) = 2 * 6 = 12
(5х) = 5 * 6 = 30
48 + 12 + 30 = 90
ответ: 48
8х + 2х + 5х = 90
15х = 90
х = 6
(8х) = 8 * 6 = 48
(2х) = 2 * 6 = 12
(5х) = 5 * 6 = 30
48 + 12 + 30 = 90
ответ: 48