a) x ≠ -1
2(3x-2)=x+1
6x-4=x+1
5x=5
x=1
b)x≠ -1/2 et x≠1
(x+6)(2x-2)=(2x+1)(x-3)
2x²+10x-12=2x²-5x-3
2x²-2x²+10x+5x=12-3
15x=9x=9/15=3/5
c) x≠ -2
3(5-x)=-2(x+2)
15-3x= -2x-4
-3x+2x= -15-4
-x= -19
x=19
d)x≠ -5 et x≠ -3/2
x(2x+3)=2x(x+5)
2x²+3x=2x²+10x
2x²-2x²+3x-10x=0
-7x=0
x=0
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a) x ≠ -1
2(3x-2)=x+1
6x-4=x+1
5x=5
x=1
b)x≠ -1/2 et x≠1
(x+6)(2x-2)=(2x+1)(x-3)
2x²+10x-12=2x²-5x-3
2x²-2x²+10x+5x=12-3
15x=9x=9/15=3/5
c) x≠ -2
3(5-x)=-2(x+2)
15-3x= -2x-4
-3x+2x= -15-4
-x= -19
x=19
d)x≠ -5 et x≠ -3/2
x(2x+3)=2x(x+5)
2x²+3x=2x²+10x
2x²-2x²+3x-10x=0
-7x=0
x=0