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1/2a+12=15
We move all terms to the left:
1/2a+12-(15)=0
Domain of the equation: 2a!=0We add all the numbers together, and all the variables
a!=0/2
a!=0
a∈R
1/2a-3=0
We multiply all the terms by the denominator
-3*2a+1=0
Wy multiply elements
-6a+1=0
We move all terms containing a to the left, all other terms to the right
-6a=-1
a=-1/-6
a=1/6
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