2(r-1)=-2(r+5)-8

Solution for 2(r-1)=-2(r+5)-8 equation:

2(r-1)=-2(r+5)-8

We move all terms to the left:

2(r-1)-(-2(r+5)-8)=0

We multiply parentheses

2r-(-2(r+5)-8)-2=0


We calculate terms in parentheses: -(-2(r+5)-8), so:

-2(r+5)-8

We multiply parentheses

-2r-10-8

We add all the numbers together, and all the variables

-2r-18

Back to the equation:

-(-2r-18)


We get rid of parentheses

2r+2r+18-2=0

We add all the numbers together, and all the variables

4r+16=0

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

4r=-16

r=-16/4

r=-4