Pomóżcie mi prosze szybko ! :) 7(2X-3)-5(2-X)+X+1= ? PROSZĘ O CAŁE ROZWIĄZANIE ;)
7(2X-3)-5(2-X)+X+1= 14x - 21 - 10 + 5x + x +1 = 20x - 30
7(2X-3)-5(2-X)+X+1= 14X-21-10+5X+X+1=20X-30
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7(2X-3)-5(2-X)+X+1= 14x - 21 - 10 + 5x + x +1 = 20x - 30
7(2X-3)-5(2-X)+X+1= 14X-21-10+5X+X+1=20X-30