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-39.278-5.11a=-3(1+7.2a)
We simplify the equation to the form, which is simple to understand
-39.278-5.11a=-3(1+7.2a)
Reorder the terms in parentheses
-39.278-5.11a=+(-3-21.6a)
Remove unnecessary parentheses
-39.278-5.11a=-3-21.6a
We move all terms containing a to the left and all other terms to the right.
-5.11a+21.6a=-3+39.278
We simplify left and right side of the equation.
+16.49a=+36.278
We divide both sides of the equation by 16.49 to get a.
a=2.2
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