9a+7=12a-2

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Solution for 9a+7=12a-2 equation:



9a+7=12a-2
We move all terms to the left:
9a+7-(12a-2)=0
We get rid of parentheses
9a-12a+2+7=0
We add all the numbers together, and all the variables
-3a+9=0
We move all terms containing a to the left, all other terms to the right
-3a=-9
a=-9/-3
a=+3

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