-10=10(4+r)

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Solution for -10=10(4+r) equation: 



-10=10(4+r)

We move all terms to the left:

-10-(10(4+r))=0

We add all the numbers together, and all the variables

-(10(r+4))-10=0



We calculate terms in parentheses: -(10(r+4)), so:

10(r+4)

We multiply parentheses

10r+40

Back to the equation:

-(10r+40)



We get rid of parentheses

-10r-40-10=0

We add all the numbers together, and all the variables

-10r-50=0

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

-10r=50

r=50/-10

r=-5

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