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-25-6a=6(8-3a)-1
We move all terms to the left:
-25-6a-(6(8-3a)-1)=0
We add all the numbers together, and all the variables
-6a-(6(-3a+8)-1)-25=0
We calculate terms in parentheses: -(6(-3a+8)-1), so:We get rid of parentheses
6(-3a+8)-1
We multiply parentheses
-18a+48-1
We add all the numbers together, and all the variables
-18a+47
Back to the equation:
-(-18a+47)
-6a+18a-47-25=0
We add all the numbers together, and all the variables
12a-72=0
We move all terms containing a to the left, all other terms to the right
12a=72
a=72/12
a=6
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