103=-5(-2r-7r)-2

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Solution for 103=-5(-2r-7r)-2 equation: 



103=-5(-2r-7r)-2

We move all terms to the left:

103-(-5(-2r-7r)-2)=0

We add all the numbers together, and all the variables

-(-5(-9r)-2)+103=0



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

-5(-9r)-2

We multiply parentheses

45r-2

Back to the equation:

-(45r-2)



We get rid of parentheses

-45r+2+103=0

We add all the numbers together, and all the variables

-45r+105=0

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

-45r=-105

r=-105/-45

r=2+1/3

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