Réponse:
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A. 4(2x-1)=7
4×2x-4×1=7
8x-4=7
8x=11
x= 11/8
B.-2x+3=-2(x-5)
-2x+3=-2×x+2×5
-2x+3=-2x+10
-2x=-2x+7
X=7
C.-5(4+3x)=2(-x+1)
-5x4-5x 3x =-2×x + 2×1
-20-15x=2x + 2
-20=17x+2
-22= 17x
X=-22/17
D.-4x-10=-5x-1
X-10=-1
X=9
F. 6-3x=5-x
6-2x=5
-2x=-1
X=-1/2
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Réponse:
A. 4(2x-1)=7
4×2x-4×1=7
8x-4=7
8x=11
x= 11/8
B.-2x+3=-2(x-5)
-2x+3=-2×x+2×5
-2x+3=-2x+10
-2x=-2x+7
X=7
C.-5(4+3x)=2(-x+1)
-5x4-5x 3x =-2×x + 2×1
-20-15x=2x + 2
-20=17x+2
-22= 17x
X=-22/17
D.-4x-10=-5x-1
X-10=-1
X=9
F. 6-3x=5-x
6-2x=5
-2x=-1
X=-1/2