equation a resoudre: 7x-2 egale 5-x 11+8x egale 2-3x 4xegale 2x+3 merci

Bonjour,

Equation a résoudre:

7x-2 = 5-x

7x - 2 + 2 = 5 - x + 2

7x + x = 7

8x = 7

8x/8 = 7/8

x = 7/8

11+8x = 2-3x

11 + 8x - 11 = 2 - 3x - 11

8x + 3x = -9 - 3x + 3x

11x = -9

11x/11 = -9/11

x = -9/11

4x = 2x+3

4x - 2x = 2x + 3 - 2x

4x - 2x = 3

2x = 3

2x/2 = 3/2

x = 3/2