РЕШІТЬ УРАВНЕНИЕ- 5-X/2+3-X/5=4

Question

РЕШІТЬ УРАВНЕНИЕ- 5-X/2+3-X/5=4

Answer 1

5 - х/2 + 3 - х/5 = 4

5 - 5х/10 + 3 - 2х/10 = 4

50 - 5х + 30 - 2х = 40

- 5х - 2х = 40 - 50 - 30

- 7х = - 40

х = - 40 : (- 7)

х = 5 5/7

Проверка: 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 = 4

Ответ: х = 5 5/7.