-72=3(5a+1)

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Solution for -72=3(5a+1) equation:



-72=3(5a+1)
We move all terms to the left:
-72-(3(5a+1))=0
We calculate terms in parentheses: -(3(5a+1)), so:
3(5a+1)
We multiply parentheses
15a+3
Back to the equation:
-(15a+3)
We get rid of parentheses
-15a-3-72=0
We add all the numbers together, and all the variables
-15a-75=0
We move all terms containing a to the left, all other terms to the right
-15a=75
a=75/-15
a=-5

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