2u+30=7u-15

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Solution for 2u+30=7u-15 equation: 



2u+30=7u-15

We move all terms to the left:

2u+30-(7u-15)=0

We get rid of parentheses

2u-7u+15+30=0

We add all the numbers together, and all the variables

-5u+45=0

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

-5u=-45

u=-45/-5

u=+9

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