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4(x-2)+3x+7=5 (x+3)-x-5

Răspuns :

4x - 8+3x +7=5x +15- x-5 4x- 8+3x+7-5x-15+x +5=0 -5x -3=0 -5x =0+3 -5x=3 x=3+5 x=8