92=-4(2r-5)-9

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Solution for 92=-4(2r-5)-9 equation: 



92=-4(2r-5)-9

We move all terms to the left:

92-(-4(2r-5)-9)=0



We calculate terms in parentheses: -(-4(2r-5)-9), so:

-4(2r-5)-9

We multiply parentheses

-8r+20-9

We add all the numbers together, and all the variables

-8r+11

Back to the equation:

-(-8r+11)



We get rid of parentheses

8r-11+92=0

We add all the numbers together, and all the variables

8r+81=0

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

8r=-81

r=-81/8

r=-10+1/8

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