Bonsoir, 1) 3x-8=2 3x= 2+8 3x= 10 x = 10/3 2) -5x+5= 1 -5x = 1-4 -5x = -3 -x = -3/5 x = 3/5 3) 2x-8= 6x-1 3x-6x = -1+8 -3x = +7 x = -7/3 4) (x+5)(x-7) = 0 (x+5)=0 =>x=-5 (x-7)=0 =>x= 7 Bon courage.
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Bonsoir, 1) 3x-8=2 3x= 2+8 3x= 10 x = 10/3 2) -5x+5= 1 -5x = 1-4 -5x = -3 -x = -3/5 x = 3/5 3) 2x-8= 6x-1 3x-6x = -1+8 -3x = +7 x = -7/3 4) (x+5)(x-7) = 0 (x+5)=0 =>x=-5 (x-7)=0 =>x= 7 Bon courage.