31=a+(5-1)7

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Solution for 31=a+(5-1)7 equation: 



31=a+(5-1)7

We move all terms to the left:

31-(a+(5-1)7)=0

We add all the numbers together, and all the variables

-(a+47)+31=0

We get rid of parentheses

-a-47+31=0

We add all the numbers together, and all the variables

-1a-16=0

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

-a=16

a=16/-1

a=-16

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