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a+6a-9=30a
We simplify the equation to the form, which is simple to understand
a+6a-9=30a
We move all terms containing a to the left and all other terms to the right.
+1a+6a-30a=+9
We simplify left and right side of the equation.
-23a=+9
We divide both sides of the equation by -23 to get a.
a=-0.391304347826
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