2u+8u=30

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Solution for 2u+8u=30 equation: 



2u+8u=30

We move all terms to the left:

2u+8u-(30)=0

We add all the numbers together, and all the variables

10u-30=0

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

10u=30

u=30/10

u=3

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