30=8+2(a+2)

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Solution for 30=8+2(a+2) equation:


30=8+2(a+2)

We simplify the equation to the form, which is simple to understand 
30=8+2(a+2)

Reorder the terms in parentheses
30=8+(+2a+4)

Remove unnecessary parentheses
+30=+8+2a+4

We move all terms containing a to the left and all other terms to the right. 
-2a=+8+4-30

We simplify left and right side of the equation. 
-2a=-18

We divide both sides of the equation by -02 to get a. 
a=9

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