Answered

Bonjour, qui pourrait m’aider SVP merci d’avance :)
Résoudre les équations :

a. 8x + 3 = 0

b. 2x - 9 = 0

c. 49 - 7x = 0

d. -6x - 5 = 0

e. 5x + 12 = 3

f. 10x + 1 = -7

g. 9x - 2 = 6

h. 20 - 4x = -4



Sagot :

VINS

bonjour,

8 x + 3 = 0

8 x = - 3

x = - 3/8

2 x - 9 = 0

2 x =  9

x = 9/2

49 - 7 x = 0

- 7 x = - 49

x = 7

- 6 x - 5 = 0

- 6 x = 5

x = - 5/6

10 x + 1 = - 7

10 x = - 7 - 1

10 x = - 8

x = - 8/10 = - 4/5

9 x - 2 =  6

9 x = 6 + 2

9 x = 8

x = 8/9

20 - 4 x = - 4

- 4 x = - 4 - 20

- 4 x = - 24

x = 6