7+8r-2=8r+45-5r

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Solution for 7+8r-2=8r+45-5r equation: 



7+8r-2=8r+45-5r

We move all terms to the left:

7+8r-2-(8r+45-5r)=0

We add all the numbers together, and all the variables

8r-(3r+45)+7-2=0

We add all the numbers together, and all the variables

8r-(3r+45)+5=0

We get rid of parentheses

8r-3r-45+5=0

We add all the numbers together, and all the variables

5r-40=0

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

5r=40

r=40/5

r=8

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