-2(2r+5)=10

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Solution for -2(2r+5)=10 equation: 



-2(2r+5)=10

We move all terms to the left:

-2(2r+5)-(10)=0

We multiply parentheses

-4r-10-10=0

We add all the numbers together, and all the variables

-4r-20=0

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

-4r=20

r=20/-4

r=-5

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