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-1.8(a-12)=2.7(a+1)
We simplify the equation to the form, which is simple to understand
-1.8(a-12)=2.7(a+1)
Reorder the terms in parentheses
+(-1.8a+21.6)=2.7*(a+1)
Remove unnecessary parentheses
-1.8a+21.6=+2.7+*(+a+1+)
Reorder the terms in parentheses
-1.8a+21.6=+(+2.7a+2.7)
Remove unnecessary parentheses
-1.8a+21.6=+2.7a+2.7
We move all terms containing a to the left and all other terms to the right.
-1.8a-2.7a=+2.7-21.6
We simplify left and right side of the equation.
-4.5a=-18.9
We divide both sides of the equation by -4.5 to get a.
a=4.2
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