Question

The sum of three consecutive intergers is -27.

What are the numbers?

A. {-11, -13, -15}
B. {-10, -9, -8}
C. {-7,-9,-11}
D. {-5,-9,-13}

Answer 1

Any ideas?

Answer 2

just add the 3 numbers in each choice and see which one gives -27.

Answer 3

Recall that consecutive integers are numbers obtained by counting by ones from any number in the set of integers.

Answer 4

Counting by ones with negative numbers would be like -10, -9, -8, -7,...

Answer 5

If you want a formula:

Let n = the first number.

Then n + 1 = second number

and n+ 2 = third number.

Answer 6

But just look at the answer choices there is only ONE answer choice that satisfies the definition of "counting by ones."

B. {-10, -9, -8}

So that^ must be the answer.

:-)

Answer 7

Sorry was AFK trying to figure out the problem in my notes, understand, I got D, but now looking at your formula I agree with you on B, thank you! Have an nice day!

Answer 8

Thanks for asking :D