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

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

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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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


We calculate terms in parentheses: -(u+3(u+4)), so:

u+3(u+4)

We multiply parentheses

u+3u+12

We add all the numbers together, and all the variables

4u+12

Back to the equation:

-(4u+12)


We get rid of parentheses

u-4u-12-7=0

We add all the numbers together, and all the variables

-3u-19=0

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

-3u=19

u=19/-3

u=-6+1/3