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-56/a=-7
We move all terms to the left:
-56/a-(-7)=0
Domain of the equation: a!=0We add all the numbers together, and all the variables
a∈R
-56/a+7=0
We multiply all the terms by the denominator
7*a-56=0
We add all the numbers together, and all the variables
7a-56=0
We move all terms containing a to the left, all other terms to the right
7a=56
a=56/7
a=8
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