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-36/a=-18
We move all terms to the left:
-36/a-(-18)=0
Domain of the equation: a!=0We add all the numbers together, and all the variables
a∈R
-36/a+18=0
We multiply all the terms by the denominator
18*a-36=0
We add all the numbers together, and all the variables
18a-36=0
We move all terms containing a to the left, all other terms to the right
18a=36
a=36/18
a=2
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