a/2*(a-1)=28

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Solution for a/2*(a-1)=28 equation: 



a/2(a-1)=28

We move all terms to the left:

a/2(a-1)-(28)=0



Domain of the equation: 2(a-1)!=0

a∈R



We multiply all the terms by the denominator


a-28*2(a-1)=0

Wy multiply elements

a-56a(a=0

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