8-5r=4r-1

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Solution for 8-5r=4r-1 equation: 



8-5r=4r-1

We move all terms to the left:

8-5r-(4r-1)=0

We get rid of parentheses

-5r-4r+1+8=0

We add all the numbers together, and all the variables

-9r+9=0

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

-9r=-9

r=-9/-9

r=1

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