12u=42+6u

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Solution for 12u=42+6u equation: 



12u=42+6u

We move all terms to the left:

12u-(42+6u)=0

We add all the numbers together, and all the variables

12u-(6u+42)=0

We get rid of parentheses

12u-6u-42=0

We add all the numbers together, and all the variables

6u-42=0

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

6u=42

u=42/6

u=7

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