17. 12 — 7x = 16x + 3 18. 5x-11 = 2x+7 19. 2х-11 = 17+3х+50

Question

17. 12 — 7x = 16x + 3 18. 5x-11 = 2x+7 19. 2х-11 = 17+3х+50

Answer 1

Ответ:

Пошаговое объяснение:

17.12 — 7x = 16x + 3

-7х-16х=3-12

-23х=-9

х=-9:(-23)

х=9/23

18.5x-11 = 2x+7

5х-2х=7+11

3х=18

х=18:3

х=6

19.2х-11 = 17+3х+50

2х-3х=50+17+11

-х=78

х=-78