4r-1=-r+9

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Solution for 4r-1=-r+9 equation: 



4r-1=-r+9

We move all terms to the left:

4r-1-(-r+9)=0

We add all the numbers together, and all the variables

4r-(-1r+9)-1=0

We get rid of parentheses

4r+1r-9-1=0

We add all the numbers together, and all the variables

5r-10=0

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

5r=10

r=10/5

r=2

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