2u+12=80

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Solution for 2u+12=80 equation: 



2u+12=80

We move all terms to the left:

2u+12-(80)=0

We add all the numbers together, and all the variables

2u-68=0

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

2u=68

u=68/2

u=34

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