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a-4a=2
We simplify the equation to the form, which is simple to understand
a-4a=2
We move all terms containing a to the left and all other terms to the right.
+1a-4a=+2
We simplify left and right side of the equation.
-3a=+2
We divide both sides of the equation by -3 to get a.
a=-0.666666666667
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