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11-10-2016
Mathematics

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the sum of three consecutive numbers is 87. What is the smallest of these numbers?

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11-10-2016

consecutive integers area 1 apart
they are
x,x+1,x+2
sum is
x+x+1+x+2=87
3x+3=87
minus 3 both sides
3x=84
divide both sides by 3
x=28
x+1=29
x+2=30

the smallest number is 28

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