3u+4(u-3)=30

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Solution for 3u+4(u-3)=30 equation: 



3u+4(u-3)=30

We move all terms to the left:

3u+4(u-3)-(30)=0

We multiply parentheses

3u+4u-12-30=0

We add all the numbers together, and all the variables

7u-42=0

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

7u=42

u=42/7

u=6

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