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1/3(21x+39)=-36
We move all terms to the left:
1/3(21x+39)-(-36)=0
Domain of the equation: 3(21x+39)!=0We add all the numbers together, and all the variables
x∈R
1/3(21x+39)+36=0
We multiply all the terms by the denominator
36*3(21x+39)+1=0
Wy multiply elements
108x(2+1=0
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