25-3(7a-12)=-(9a-15)+(7-4a

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Solution for 25-3(7a-12)=-(9a-15)+(7-4a equation:



25-3(7a-12)=-(9a-15)+(7-4a
We move all terms to the left:
25-3(7a-12)-(-(9a-15)+(7-4a)=0
We add all the numbers together, and all the variables
-3(7a-12)-(-(9a-15)+(-4a+7)+25=0
We multiply parentheses
-21a-(-(9a-15)+(-4a+7)+25+36=0

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