3a-(3-a)=-30

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Solution for 3a-(3-a)=-30 equation: 



3a-(3-a)=-30

We move all terms to the left:

3a-(3-a)-(-30)=0

We add all the numbers together, and all the variables

3a-(-1a+3)-(-30)=0

We add all the numbers together, and all the variables

3a-(-1a+3)+30=0

We get rid of parentheses

3a+1a-3+30=0

We add all the numbers together, and all the variables

4a+27=0

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

4a=-27

a=-27/4

a=-6+3/4

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