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13/10a=13
We move all terms to the left:
13/10a-(13)=0
Domain of the equation: 10a!=0We multiply all the terms by the denominator
a!=0/10
a!=0
a∈R
-13*10a+13=0
Wy multiply elements
-130a+13=0
We move all terms containing a to the left, all other terms to the right
-130a=-13
a=-13/-130
a=1/10
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