-45=-0.5(r-7.1)

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Solution for -45=-0.5(r-7.1) equation: 



-45=-0.5(r-7.1)

We move all terms to the left:

-45-(-0.5(r-7.1))=0



We calculate terms in parentheses: -(-0.5(r-7.1)), so:

-0.5(r-7.1)

We multiply parentheses

-0.5r+3.55

Back to the equation:

-(-0.5r+3.55)



We get rid of parentheses

0.5r-3.55-45=0

We add all the numbers together, and all the variables

0.5r-48.55=0

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

0.5r=48.55

r=48.55/0.5

r=97+0.049999999999997/0.5

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