4+10r-1=9r+12-2r

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Solution for 4+10r-1=9r+12-2r equation: 



4+10r-1=9r+12-2r

We move all terms to the left:

4+10r-1-(9r+12-2r)=0

We add all the numbers together, and all the variables

10r-(7r+12)+4-1=0

We add all the numbers together, and all the variables

10r-(7r+12)+3=0

We get rid of parentheses

10r-7r-12+3=0

We add all the numbers together, and all the variables

3r-9=0

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

3r=9

r=9/3

r=3

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