27=7a-9a

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Solution for 27=7a-9a equation:



27=7a-9a
We move all terms to the left:
27-(7a-9a)=0
We add all the numbers together, and all the variables
-(-2a)+27=0
We get rid of parentheses
2a+27=0
We move all terms containing a to the left, all other terms to the right
2a=-27
a=-27/2
a=-13+1/2

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