10(r+9)=200

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Solution for 10(r+9)=200 equation: 



10(r+9)=200

We move all terms to the left:

10(r+9)-(200)=0

We multiply parentheses

10r+90-200=0

We add all the numbers together, and all the variables

10r-110=0

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

10r=110

r=110/10

r=11

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