8+4a-4=20

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Solution for 8+4a-4=20 equation:


8+4a-4=20

We simplify the equation to the form, which is simple to understand 
8+4a-4=20

We move all terms containing a to the left and all other terms to the right. 
+4a=+20-8+4

We simplify left and right side of the equation. 
+4a=+16

We divide both sides of the equation by 4 to get a. 
a=4

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