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

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



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

We move all terms to the left:

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

We multiply parentheses

-8r-8r-(4(r-1)-4)-28=0



We calculate terms in parentheses: -(4(r-1)-4), so:

4(r-1)-4

We multiply parentheses

4r-4-4

We add all the numbers together, and all the variables

4r-8

Back to the equation:

-(4r-8)



We add all the numbers together, and all the variables

-16r-(4r-8)-28=0

We get rid of parentheses

-16r-4r+8-28=0

We add all the numbers together, and all the variables

-20r-20=0

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

-20r=20

r=20/-20

r=-1

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