Bonsoir
Résoudre les équations :
a) 2x-8(x-4)=8x+6-7+4x
2x - 8x + 32 = 12x - 1
-6x + 32 = 12x - 1
32 + 1 = 12x + 6x
33 = 18x
x = 33/18
x = (3 * 11)/(3 * 6)
x = 11/6
d) 6(3y-5)=-(-5-y)
18y - 30 = 5 + y
18y - y = 5 + 30
17y = 35
y = 35/17
b) -(x+5)=5(1-2x)
-x - 5 = 5 - 10x
10x - x = 5 + 5
9x = 10
x = 10/9
e) 7x-2x+2x-9+7x=14x
14x - 9 = 14x
-9 = 14x - 14x
-9 = 0
Impossible pas de solution
c) 9x-7x+5-9x=6-4x+8x
-7x + 5 = 4x + 6
5 - 6 = 4x + 7x
-1 = 11x
x = -1/11
f) -(18-x)+7(3x+5)=-(2-4X)
-18 + x + 21x + 35 = -2 + 4x
22x - 4x = -2 + 18 - 35
18x = -19
x = -19/18
