7r+4r=-2(r-2)+5(5r+4)

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Solution for 7r+4r=-2(r-2)+5(5r+4) equation: 



7r+4r=-2(r-2)+5(5r+4)

We move all terms to the left:

7r+4r-(-2(r-2)+5(5r+4))=0

We add all the numbers together, and all the variables

11r-(-2(r-2)+5(5r+4))=0



We calculate terms in parentheses: -(-2(r-2)+5(5r+4)), so:

-2(r-2)+5(5r+4)

We multiply parentheses

-2r+25r+4+20

We add all the numbers together, and all the variables

23r+24

Back to the equation:

-(23r+24)



We get rid of parentheses

11r-23r-24=0

We add all the numbers together, and all the variables

-12r-24=0

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

-12r=24

r=24/-12

r=-2

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