2r+9r+(12-2r)=2

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Solution for 2r+9r+(12-2r)=2 equation: 



2r+9r+(12-2r)=2

We move all terms to the left:

2r+9r+(12-2r)-(2)=0

We add all the numbers together, and all the variables

2r+9r+(-2r+12)-2=0

We add all the numbers together, and all the variables

11r+(-2r+12)-2=0

We get rid of parentheses

11r-2r+12-2=0

We add all the numbers together, and all the variables

9r+10=0

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

9r=-10

r=-10/9

r=-1+1/9

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