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2x +7-3(x+4)=-4x-2(3-x)


Răspuns :

2x +7-3(x+4)=-4x-2(3-x)
2x +7 - 3x - 12 = - 4x - 6 + 2x 
2x - 3x + 4x - 2x = -6 - 7 + 12 
x = - 1 
2x +7-3(x+4)=-4x-2(3-x)
2x+7-3x-12=-4x-6+2x
7-3x-12=-4x-6
-5-3x=-4x-6
-5x-3x+4x=-6
-3x+4x=-6+5
x=-6+5
x=-1