7u=40+2u

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Solution for 7u=40+2u equation: 



7u=40+2u

We move all terms to the left:

7u-(40+2u)=0

We add all the numbers together, and all the variables

7u-(2u+40)=0

We get rid of parentheses

7u-2u-40=0

We add all the numbers together, and all the variables

5u-40=0

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

5u=40

u=40/5

u=8

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