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a-3+2a=-3-2
We simplify the equation to the form, which is simple to understand
a-3+2a=-3-2
We move all terms containing a to the left and all other terms to the right.
+1a+2a=-3-2+3
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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