-7u+4(u+6)=21

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Solution for -7u+4(u+6)=21 equation: 



-7u+4(u+6)=21

We move all terms to the left:

-7u+4(u+6)-(21)=0

We multiply parentheses

-7u+4u+24-21=0

We add all the numbers together, and all the variables

-3u+3=0

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

-3u=-3

u=-3/-3

u=1

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