jinxxified jinxxified

02-10-2017
Mathematics

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the sum of three consecutive integers if the last integer is z.
a.) 3z+3
b.) 3z+6
c.)3z-3
d.)3z

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mathmate mathmate

02-10-2017

The last integer is z, then the other two are z-1 and z-2.
The sum is therefore
(z-2)+(z-1)+z=3z-3.

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