-9=5/2r+11

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Solution for -9=5/2r+11 equation: 



-9=5/2r+11

We move all terms to the left:

-9-(5/2r+11)=0



Domain of the equation: 2r+11)!=0

r∈R



We get rid of parentheses

-5/2r-11-9=0

We multiply all the terms by the denominator


-11*2r-9*2r-5=0

Wy multiply elements

-22r-18r-5=0

We add all the numbers together, and all the variables

-40r-5=0

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

-40r=5

r=5/-40

r=-1/8

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