2x-31=123

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Solution for 2x-31=123 equation: 



2x-31=123

We move all terms to the left:

2x-31-(123)=0

We add all the numbers together, and all the variables

2x-154=0

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

2x=154

x=154/2

x=77

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