18=-7(3r-8)+8(8r+6)

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Solution for 18=-7(3r-8)+8(8r+6) equation: 



18=-7(3r-8)+8(8r+6)

We move all terms to the left:

18-(-7(3r-8)+8(8r+6))=0



We calculate terms in parentheses: -(-7(3r-8)+8(8r+6)), so:

-7(3r-8)+8(8r+6)

We multiply parentheses

-21r+64r+56+48

We add all the numbers together, and all the variables

43r+104

Back to the equation:

-(43r+104)



We get rid of parentheses

-43r-104+18=0

We add all the numbers together, and all the variables

-43r-86=0

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

-43r=86

r=86/-43

r=-2

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