bonsoir vous pouvez m'aidez svp Merci d'avance Bonne soirée

Exo 1:

1)

2x + 8 = 7x + 6

2x - 7x = 6 - 8

-5x = -2

-x = -2/5

x = 2/5

3)

= 3/7 - 2/7 fois 21/8

= 1/7 fois 21/8

= 3/8

4)

x² + 6x + 9 = 0

x² + 6x = -9

Exo 2:

a)

x + 3 = 6

x = 6 - 3

x = 3

b)

x + 5 = -6

x = - 6 -5

x = -11

c)

x + 3 = -8

x = -8 - 3

x = -11

d)

x - 4 =2

x = 2 + 4

x = 6

e)

x - 8 = 10

x = 10 + 8

x = 18

f)

x - 1 = - 4

x = - 4 + 1

x = -3