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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

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



We calculate terms in parentheses: -(9(u+1)-7), so:

9(u+1)-7

We multiply parentheses

9u+9-7

We add all the numbers together, and all the variables

9u+2

Back to the equation:

-(9u+2)



We add all the numbers together, and all the variables

4u-(9u+2)-3=0

We get rid of parentheses

4u-9u-2-3=0

We add all the numbers together, and all the variables

-5u-5=0

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

-5u=5

u=5/-5

u=-1

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