5x+13=16+6x 29+4x=x+23
23-8x=16-9x
10x+22=14x+7,2
16x+47=11+10x
21x+31=15x+1
6класс

Пошаговое объяснение:

5x+13=16+6x

6x - 5x = 13 - 16

x = -3

29+4x=x+23

4x - x = 23 - 29

3x = -6

x = -6 : 3

x = -2

23-8x=16-9x

9x - 8x = 16 - 23

x = -7

10x+22=14x+7,2

14x - 10x = 22 - 7,2

4x = 14,8

x = 14,8 : 4

x = 3,7

16x+47=11+10x

16x - 10x = 11 - 47

6x = -36

x = -36:6

x = -6

21x+31=15x+1

21x - 15x = 31 - 1

6x = 30

x = 30:6

x = 5