8r-7+9=10r-2

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Solution for 8r-7+9=10r-2 equation: 



8r-7+9=10r-2

We move all terms to the left:

8r-7+9-(10r-2)=0

We add all the numbers together, and all the variables

8r-(10r-2)+2=0

We get rid of parentheses

8r-10r+2+2=0

We add all the numbers together, and all the variables

-2r+4=0

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

-2r=-4

r=-4/-2

r=+2

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