-3(-7u+8)-u=2(u-3)-3

Solution for -3(-7u+8)-u=2(u-3)-3 equation:

-3(-7u+8)-u=2(u-3)-3

We move all terms to the left:

-3(-7u+8)-u-(2(u-3)-3)=0

We add all the numbers together, and all the variables

-1u-3(-7u+8)-(2(u-3)-3)=0

We multiply parentheses

-1u+21u-(2(u-3)-3)-24=0


We calculate terms in parentheses: -(2(u-3)-3), so:

2(u-3)-3

We multiply parentheses

2u-6-3

We add all the numbers together, and all the variables

2u-9

Back to the equation:

-(2u-9)


We add all the numbers together, and all the variables

20u-(2u-9)-24=0

We get rid of parentheses

20u-2u+9-24=0

We add all the numbers together, and all the variables

18u-15=0

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

18u=15

u=15/18

u=5/6