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5a+4a=56
We simplify the equation to the form, which is simple to understand
5a+4a=56
We move all terms containing a to the left and all other terms to the right.
+5a+4a=+56
We simplify left and right side of the equation.
+9a=+56
We divide both sides of the equation by 9 to get a.
a=6.2222222222222
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