10u=3u+42

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Solution for 10u=3u+42 equation: 



10u=3u+42

We move all terms to the left:

10u-(3u+42)=0

We get rid of parentheses

10u-3u-42=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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