-2(9r+3)-7r=-10r-(10r+9)

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Solution for -2(9r+3)-7r=-10r-(10r+9) equation: 



-2(9r+3)-7r=-10r-(10r+9)

We move all terms to the left:

-2(9r+3)-7r-(-10r-(10r+9))=0

We add all the numbers together, and all the variables

-7r-2(9r+3)-(-10r-(10r+9))=0

We multiply parentheses

-7r-18r-(-10r-(10r+9))-6=0



We calculate terms in parentheses: -(-10r-(10r+9)), so:

-10r-(10r+9)

We get rid of parentheses

-10r-10r-9

We add all the numbers together, and all the variables

-20r-9

Back to the equation:

-(-20r-9)



We add all the numbers together, and all the variables

-25r-(-20r-9)-6=0

We get rid of parentheses

-25r+20r+9-6=0

We add all the numbers together, and all the variables

-5r+3=0

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

-5r=-3

r=-3/-5

r=3/5

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