10r-20+2r+12+6r=180

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Solution for 10r-20+2r+12+6r=180 equation: 



10r-20+2r+12+6r=180

We move all terms to the left:

10r-20+2r+12+6r-(180)=0

We add all the numbers together, and all the variables

18r-188=0

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

18r=188

r=188/18

r=10+4/9

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