3(a+5)=5(a-7)

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Solution for 3(a+5)=5(a-7) equation:



3(a+5)=5(a-7)
We move all terms to the left:
3(a+5)-(5(a-7))=0
We multiply parentheses
3a-(5(a-7))+15=0
We calculate terms in parentheses: -(5(a-7)), so:
5(a-7)
We multiply parentheses
5a-35
Back to the equation:
-(5a-35)
We get rid of parentheses
3a-5a+35+15=0
We add all the numbers together, and all the variables
-2a+50=0
We move all terms containing a to the left, all other terms to the right
-2a=-50
a=-50/-2
a=+25

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