7(u+3)=4u-9

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Solution for 7(u+3)=4u-9 equation: 



7(u+3)=4u-9

We move all terms to the left:

7(u+3)-(4u-9)=0

We multiply parentheses

7u-(4u-9)+21=0

We get rid of parentheses

7u-4u+9+21=0

We add all the numbers together, and all the variables

3u+30=0

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

3u=-30

u=-30/3

u=-10

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