50+.30r=20+.50r

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Solution for 50+.30r=20+.50r equation: 



50+.30r=20+.50r

We move all terms to the left:

50+.30r-(20+.50r)=0

We add all the numbers together, and all the variables

.30r-(.50r+20)+50=0

We get rid of parentheses

.30r-.50r-20+50=0

We add all the numbers together, and all the variables

-0.2r+30=0

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

-0.2r=-30

r=-30/-0.2

r=+150

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