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14+12a=20
We simplify the equation to the form, which is simple to understand
14+12a=20
We move all terms containing a to the left and all other terms to the right.
+12a=+20-14
We simplify left and right side of the equation.
+12a=+6
We divide both sides of the equation by 12 to get a.
a=0.5
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