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x=1/2(30+2x-30)
We move all terms to the left:
x-(1/2(30+2x-30))=0
Domain of the equation: 2(30+2x-30))!=0We add all the numbers together, and all the variables
x∈R
x-(1/2(+2x))=0
We multiply all the terms by the denominator
x*2(+2x))-(1=0
Wy multiply elements
2x^2(+=0
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