2x-5+7x=31

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Solution for 2x-5+7x=31 equation: 



2x-5+7x=31

We move all terms to the left:

2x-5+7x-(31)=0

We add all the numbers together, and all the variables

9x-36=0

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

9x=36

x=36/9

x=4

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