2х+17=22+3х 18+3х=х+14 25-4х=12-5х 13х+27=16х+4,5 21х+45=17+14х 13х+70=2х+15

Question

2х+17=22+3х
18+3х=х+14
25-4х=12-5х
13х+27=16х+4,5
21х+45=17+14х
13х+70=2х+15

Answer 1

2x+17 = 22+3x
2x-3x = 22-17
-x = 5
x = -5

18+3x = x+14
3x-x = 14-18
2x = -4
x = -2

25-4x = 12-5x
-4x+5x = 12-25
x = -13

13x+27 = 16x+4,5
13x-16x = 4,5-27
-3x = -22,5
x = 7,5

21x+45 = 17+14x
21x-14x = 17-45
7x = -28
x = -4

13x+70 = 2x+15
13x-2x = 15-70
11x = -55
x = -5

Comments

Спасибо за ответ