30=4u-30

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Solution for 30=4u-30 equation: 



30=4u-30

We move all terms to the left:

30-(4u-30)=0

We get rid of parentheses

-4u+30+30=0

We add all the numbers together, and all the variables

-4u+60=0

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

-4u=-60

u=-60/-4

u=+15

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