(30-5a+3a)+(3a+7a-1)=-3

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Solution for (30-5a+3a)+(3a+7a-1)=-3 equation: 



(30-5a+3a)+(3a+7a-1)=-3

We move all terms to the left:

(30-5a+3a)+(3a+7a-1)-(-3)=0

We add all the numbers together, and all the variables

(-2a+30)+(10a-1)-(-3)=0

We add all the numbers together, and all the variables

(-2a+30)+(10a-1)+3=0

We get rid of parentheses

-2a+10a+30-1+3=0

We add all the numbers together, and all the variables

8a+32=0

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

8a=-32

a=-32/8

a=-4

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