-4(2r-5)=-20

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Solution for -4(2r-5)=-20 equation: 



-4(2r-5)=-20

We move all terms to the left:

-4(2r-5)-(-20)=0

We add all the numbers together, and all the variables

-4(2r-5)+20=0

We multiply parentheses

-8r+20+20=0

We add all the numbers together, and all the variables

-8r+40=0

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

-8r=-40

r=-40/-8

r=+5

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