3(5a+5)=6a-30

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Solution for 3(5a+5)=6a-30 equation: 



3(5a+5)=6a-30

We move all terms to the left:

3(5a+5)-(6a-30)=0

We multiply parentheses

15a-(6a-30)+15=0

We get rid of parentheses

15a-6a+30+15=0

We add all the numbers together, and all the variables

9a+45=0

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

9a=-45

a=-45/9

a=-5

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