03-03-2016
Mathematics

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What is a number 27 greater than twice the opposite of itself?

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unicorn3125 unicorn3125

03-03-2016

the number: n
opposite number: -n
twice the opposite number: 2·(-n)=-2n
27 greater then -2n: -2n+27

n = -2n + 27
n + 2n = 27
3n = 27
3·n = 3·9
n = 9

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