3x(x+2)−x(3x+3)=13x(x+2)−x(3x+3)=1 x(2x−1)−2x(x−2)=6x(2x−1)−2x(x−2)=6 (x+1)(x+2)−x(x+4)=7(x+1)(x+2)−x(x+4)=7

3x(x+2)−x(3x+3)=13x(x+2)−x(3x+3)=1 x(2x−1)−2x(x−2)=6x(2x−1)−2x(x−2)=6 (x+1)(x+2)−x(x+4)=7(x+1)(x+2)−x(x+4)=7
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