-240=-8(-5-5r)

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Solution for -240=-8(-5-5r) equation: 



-240=-8(-5-5r)

We move all terms to the left:

-240-(-8(-5-5r))=0

We add all the numbers together, and all the variables

-(-8(-5r-5))-240=0



We calculate terms in parentheses: -(-8(-5r-5)), so:

-8(-5r-5)

We multiply parentheses

40r+40

Back to the equation:

-(40r+40)



We get rid of parentheses

-40r-40-240=0

We add all the numbers together, and all the variables

-40r-280=0

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

-40r=280

r=280/-40

r=-7

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