7(u-3)=-42

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Solution for 7(u-3)=-42 equation: 



7(u-3)=-42

We move all terms to the left:

7(u-3)-(-42)=0

We add all the numbers together, and all the variables

7(u-3)+42=0

We multiply parentheses

7u-21+42=0

We add all the numbers together, and all the variables

7u+21=0

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

7u=-21

u=-21/7

u=-3

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