180=-5-5(3+8r)

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Solution for 180=-5-5(3+8r) equation:



180=-5-5(3+8r)
We move all terms to the left:
180-(-5-5(3+8r))=0
We add all the numbers together, and all the variables
-(-5-5(8r+3))+180=0
We calculate terms in parentheses: -(-5-5(8r+3)), so:
-5-5(8r+3)
determiningTheFunctionDomain -5(8r+3)-5
We multiply parentheses
-40r-15-5
We add all the numbers together, and all the variables
-40r-20
Back to the equation:
-(-40r-20)
We get rid of parentheses
40r+20+180=0
We add all the numbers together, and all the variables
40r+200=0
We move all terms containing r to the left, all other terms to the right
40r=-200
r=-200/40
r=-5

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