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x=-3/4(-(4x-20)3)
We move all terms to the left:
x-(-3/4(-(4x-20)3))=0
Domain of the equation: 4(-(4x-20)3))!=0We multiply all the terms by the denominator
x∈R
x*4(-(4x-20)3))-(-3=0
Wy multiply elements
4x^2(--3=0
We use the square of the difference formula
4x^2(+3=0
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