-3(5-3a)=4a+25

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Solution for -3(5-3a)=4a+25 equation: 



-3(5-3a)=4a+25

We move all terms to the left:

-3(5-3a)-(4a+25)=0

We add all the numbers together, and all the variables

-3(-3a+5)-(4a+25)=0

We multiply parentheses

9a-(4a+25)-15=0

We get rid of parentheses

9a-4a-25-15=0

We add all the numbers together, and all the variables

5a-40=0

We move all terms containing a to the left, all other terms to the right

5a=40

a=40/5

a=8

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