3a-3(7+5a)=-9(2=a)

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Solution for 3a-3(7+5a)=-9(2=a) equation: 



3a-3(7+5a)=-9(2=a)

We move all terms to the left:

3a-3(7+5a)-(-9(2)=0

We add all the numbers together, and all the variables

3a-3(5a+7)-(-92=0

We add all the numbers together, and all the variables

3a-3(5a+7)=0

We multiply parentheses

3a-15a-21=0

We add all the numbers together, and all the variables

-12a-21=0

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

-12a=21

a=21/-12

a=-1+3/4

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