9(u+1)=7u+3

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Solution for 9(u+1)=7u+3 equation: 



9(u+1)=7u+3

We move all terms to the left:

9(u+1)-(7u+3)=0

We multiply parentheses

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

We get rid of parentheses

9u-7u-3+9=0

We add all the numbers together, and all the variables

2u+6=0

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

2u=-6

u=-6/2

u=-3

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