-5(3+r)=20

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Solution for -5(3+r)=20 equation: 



-5(3+r)=20

We move all terms to the left:

-5(3+r)-(20)=0

We add all the numbers together, and all the variables

-5(r+3)-20=0

We multiply parentheses

-5r-15-20=0

We add all the numbers together, and all the variables

-5r-35=0

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

-5r=35

r=35/-5

r=-7

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