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svp aider moi2(3x+5)=x-5

Répondre :

6x+10=x-5.
6x-x=-10-5.
5x=-15.
x=-15/5.
x=-3
2(3x+5)=x-5
6x + 10 = x-5
6x-x = -5-10
5x = -15
x = (-15) *5
x = -3