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2/7(-4x-7)=4
We move all terms to the left:
2/7(-4x-7)-(4)=0
Domain of the equation: 7(-4x-7)!=0We multiply all the terms by the denominator
x∈R
-4*7(-4x-7)+2=0
Wy multiply elements
-28x(-+2=0
We use the square of the difference formula
-28x(-2=0
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