РЕШІТЬ УРАВНЕНИЕ- 5-X/2+3-X/5=4

5 - х/2 + 3 - х/5 = 45 - 5х/10 + 3 - 2х/10 = 450 - 5х + 30 - 2х = 40- 5х - 2х = 40 - 50 - 30- 7х = - 40х = - 40 : (- 7)х = 5 5/7Проверка: 5 - 40/7 * 1/2 + 3 - 40/7 * 1/5 = 4                  5 - 40/14 + 3 - 40/35 = 4                  5 - 200/70 + 3 - 80/70 = 4                  5 + 3 - 280/70 = 4                  8 - 4 = 4                  4 = 4Ответ: х = 5 5/7.