13+2r=-7r-4(5+6r)

Solution for 13+2r=-7r-4(5+6r) equation:

13+2r=-7r-4(5+6r)

We move all terms to the left:

13+2r-(-7r-4(5+6r))=0

We add all the numbers together, and all the variables

2r-(-7r-4(6r+5))+13=0


We calculate terms in parentheses: -(-7r-4(6r+5)), so:

-7r-4(6r+5)

We multiply parentheses

-7r-24r-20

We add all the numbers together, and all the variables

-31r-20

Back to the equation:

-(-31r-20)


We get rid of parentheses

2r+31r+20+13=0

We add all the numbers together, and all the variables

33r+33=0

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

33r=-33

r=-33/33

r=-1