-86=-2r-3(2-4r)

Solution for -86=-2r-3(2-4r) equation:

-86=-2r-3(2-4r)

We move all terms to the left:

-86-(-2r-3(2-4r))=0

We add all the numbers together, and all the variables

-(-2r-3(-4r+2))-86=0


We calculate terms in parentheses: -(-2r-3(-4r+2)), so:

-2r-3(-4r+2)

We multiply parentheses

-2r+12r-6

We add all the numbers together, and all the variables

10r-6

Back to the equation:

-(10r-6)


We get rid of parentheses

-10r+6-86=0

We add all the numbers together, and all the variables

-10r-80=0

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

-10r=80

r=80/-10

r=-8