4r+20=6r+200

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Solution for 4r+20=6r+200 equation: 



4r+20=6r+200

We move all terms to the left:

4r+20-(6r+200)=0

We get rid of parentheses

4r-6r-200+20=0

We add all the numbers together, and all the variables

-2r-180=0

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

-2r=180

r=180/-2

r=-90

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