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Aidez moi svp 2(3x + 4) - 5 (1-2x) = 7 (2x - 3) + 12 Merci :)

Sagot :

THOMAS1106

6x+8-5+10x=14x-21+12
16x+3-14x+9=0
2x+12=0
2x=-12
x=-6

WAZZA

6x + 8 - 5  + 10x  =  14x - 21 + 12 

6x + 10x - 14x  =  - 21 + 12  - 8 + 5 

2x =  -12

 x = - 6

 voilà ;D