qui pourrais m'aider svp

2x +3 = -3x + 8

3x + 2x = 8 - 3

5x = 5

x = 1

3x - 1 = 7x +5

-1 -5 = 7x - 3x

-6 = 4x

-6/4 = x

x = -3/2

x - 5 = 4x + 13

-5 -13 = 4x - x

-18 = 3x

x= -18/3

x = -6

5x + 3 = -2x + 4

5x +2x = 4 -3

7x = 1

x = 1/7