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30+27a=0
We simplify the equation to the form, which is simple to understand
30+27a=0
We move all terms containing a to the left and all other terms to the right.
+27a=0-30
We simplify left and right side of the equation.
+27a=-30
We divide both sides of the equation by 27 to get a.
a=-1.11111111111
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