5a-87=3a-31

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Solution for 5a-87=3a-31 equation: 



5a-87=3a-31

We move all terms to the left:

5a-87-(3a-31)=0

We get rid of parentheses

5a-3a+31-87=0

We add all the numbers together, and all the variables

2a-56=0

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

2a=56

a=56/2

a=28

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