R+9=42,r+9-9=42+9

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Solution for R+9=42,r+9-9=42+9 equation: 



+9=42.R+9-9=42+9

We move all terms to the left:

+9-(42.R+9-9)=0

We add all the numbers together, and all the variables

-(+42.R)+9=0

We get rid of parentheses

-42.R+9=0

We add all the numbers together, and all the variables

-42R+9=0

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

-42R=-9

R=-9/-42

R=3/14

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