a-50+a=a+31

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Solution for a-50+a=a+31 equation: 



a-50+a=a+31

We move all terms to the left:

a-50+a-(a+31)=0

We add all the numbers together, and all the variables

2a-(a+31)-50=0

We get rid of parentheses

2a-a-31-50=0

We add all the numbers together, and all the variables

a-81=0

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

a=81

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