Bonsoir,
2x-5 -5+x
2x -5 x
2x-5 +-5x +x = 20
-2x -5 = 20
-5 -20 = 2x
-25 = 2x
x= -25 /2 = - 12,5
3+2x 3x+16
-5+x x+8 8+2x
-5 x 8 2x
3+2x + 3x+16 = -11
6x +19 = -11
6x = -11-19
6x = -30
x= -30/6 = -5
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Bonsoir,
2x-5 -5+x
2x -5 x
2x-5 +-5x +x = 20
-2x -5 = 20
-5 -20 = 2x
-25 = 2x
x= -25 /2 = - 12,5
3+2x 3x+16
-5+x x+8 8+2x
-5 x 8 2x
3+2x + 3x+16 = -11
6x +19 = -11
6x = -11-19
6x = -30
x= -30/6 = -5