-7r-8=-4-9r

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Solution for -7r-8=-4-9r equation: 



-7r-8=-4-9r

We move all terms to the left:

-7r-8-(-4-9r)=0

We add all the numbers together, and all the variables

-7r-(-9r-4)-8=0

We get rid of parentheses

-7r+9r+4-8=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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