4(21+3)=-3(a-1)+31

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Solution for 4(21+3)=-3(a-1)+31 equation: 



4(21+3)=-3(a-1)+31

We move all terms to the left:

4(21+3)-(-3(a-1)+31)=0

We add all the numbers together, and all the variables

-(-3(a-1)+31)+424=0



We calculate terms in parentheses: -(-3(a-1)+31), so:

-3(a-1)+31

We multiply parentheses

-3a+3+31

We add all the numbers together, and all the variables

-3a+34

Back to the equation:

-(-3a+34)



We get rid of parentheses

3a-34+424=0

We add all the numbers together, and all the variables

3a+390=0

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

3a=-390

a=-390/3

a=-130

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