18--2a=12

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Solution for 18--2a=12 equation:


18--2a=12

We simplify the equation to the form, which is simple to understand 
18+2a=12

We move all terms containing a to the left and all other terms to the right. 
+2a=+12-18

We simplify left and right side of the equation. 
+2a=-6

We divide both sides of the equation by 2 to get a. 
a=-3

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