a-9=4a-15

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Solution for a-9=4a-15 equation:



a-9=4a-15
We move all terms to the left:
a-9-(4a-15)=0
We get rid of parentheses
a-4a+15-9=0
We add all the numbers together, and all the variables
-3a+6=0
We move all terms containing a to the left, all other terms to the right
-3a=-6
a=-6/-3
a=+2

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