-42=12a+18

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Solution for -42=12a+18 equation:



-42=12a+18
We move all terms to the left:
-42-(12a+18)=0
We get rid of parentheses
-12a-18-42=0
We add all the numbers together, and all the variables
-12a-60=0
We move all terms containing a to the left, all other terms to the right
-12a=60
a=60/-12
a=-5

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