Bonjour :
d)
8(a - 2) = -1 + (5a - 8)
8a - 16 = -1 + 5a - 8
8a - 5a = -1 - 8 + 16
3a = 7
a = 7/3
f)
-(3 - 7x) = -2(5x - 1)
-3 + 7x = -10x + 2
7x + 10x = 2 + 3
17x = 5
x = 5/17
b)
-x/8 = -2/3
-x×3 = -2×8
-3x = -16
x = -16/-3
x = 16/3
d)
-2(x + 6) = x/2
(-2x - 12) = x/2
2(-2x - 12) = x
-4x - 24 = x
-4x - x = 24
-5x = 24
x = 24/-5
x = -24/5
J’espère t'avoir t'aider
