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9+3x=1/2(18+6x)
We move all terms to the left:
9+3x-(1/2(18+6x))=0
Domain of the equation: 2(18+6x))!=0We add all the numbers together, and all the variables
x∈R
3x-(1/2(6x+18))+9=0
We multiply all the terms by the denominator
3x*2(6x+18))-(1+9*2(6x+18))=0
Wy multiply elements
6x^2(6+18x(6=0
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