-4(1+r)+8r=-2(-2-6r)-7r

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Solution for -4(1+r)+8r=-2(-2-6r)-7r equation: 



-4(1+r)+8r=-2(-2-6r)-7r

We move all terms to the left:

-4(1+r)+8r-(-2(-2-6r)-7r)=0

We add all the numbers together, and all the variables

-4(r+1)+8r-(-2(-6r-2)-7r)=0

We add all the numbers together, and all the variables

8r-4(r+1)-(-2(-6r-2)-7r)=0

We multiply parentheses

8r-4r-(-2(-6r-2)-7r)-4=0



We calculate terms in parentheses: -(-2(-6r-2)-7r), so:

-2(-6r-2)-7r

We add all the numbers together, and all the variables

-7r-2(-6r-2)

We multiply parentheses

-7r+12r+4

We add all the numbers together, and all the variables

5r+4

Back to the equation:

-(5r+4)



We add all the numbers together, and all the variables

4r-(5r+4)-4=0

We get rid of parentheses

4r-5r-4-4=0

We add all the numbers together, and all the variables

-1r-8=0

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

-r=8

r=8/-1

r=-8

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