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7x=4/5(5x+30)
We move all terms to the left:
7x-(4/5(5x+30))=0
Domain of the equation: 5(5x+30))!=0We multiply all the terms by the denominator
x∈R
7x*5(5x+30))-(4=0
Wy multiply elements
35x^2(5=0
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