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résoudre les équations suivantes:1)11X+12=9X+16 2) 2- (6-2X)=4-(2X-4)
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11x-9x+12-12 = 9x-9x+16-12
2x = 4
x = 4/2
x = 2
2-(6-2x) = 4-(2x-4)
2-6+2x = 4-2x+4
2x-4 = -2x+8
2x+2x-4+4 = -2x+2x+8+4
4x = 12
x = 12/4
x = 3
11X-9X=16-12
2x=4
x=4/2
x=2
2) 2- (6-2X)=4-(2X-4)
2-6+2X=4-2X+4
-4+2X=-2X+8
4x=12
x=12/4
x=3