5r-4=-(-2r-5)

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Solution for 5r-4=-(-2r-5) equation: 



5r-4=-(-2r-5)

We move all terms to the left:

5r-4-(-(-2r-5))=0



We calculate terms in parentheses: -(-(-2r-5)), so:

-(-2r-5)

We get rid of parentheses

2r+5

Back to the equation:

-(2r+5)



We get rid of parentheses

5r-2r-5-4=0

We add all the numbers together, and all the variables

3r-9=0

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

3r=9

r=9/3

r=3

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