4-8r=10-9r

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Solution for 4-8r=10-9r equation: 



4-8r=10-9r

We move all terms to the left:

4-8r-(10-9r)=0

We add all the numbers together, and all the variables

-8r-(-9r+10)+4=0

We get rid of parentheses

-8r+9r-10+4=0

We add all the numbers together, and all the variables

r-6=0

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

r=6

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