10(-3+r)=-20

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Solution for 10(-3+r)=-20 equation: 



10(-3+r)=-20

We move all terms to the left:

10(-3+r)-(-20)=0

We add all the numbers together, and all the variables

10(r-3)-(-20)=0

We add all the numbers together, and all the variables

10(r-3)+20=0

We multiply parentheses

10r-30+20=0

We add all the numbers together, and all the variables

10r-10=0

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

10r=10

r=10/10

r=1

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