12u-2u-7=13

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Solution for 12u-2u-7=13 equation: 



12u-2u-7=13

We move all terms to the left:

12u-2u-7-(13)=0

We add all the numbers together, and all the variables

10u-20=0

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

10u=20

u=20/10

u=2

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