Write a simplified expression that expression that shows thesum of three consecutive numbers where n is the last number. substitute n=5 to test the expression. what are the three consecutive numbers? what is their sum?

➷ The last number : n

The second number : n - 1

The third number : n - 2

n + n - 1 + n - 2

Simplify this:

3n - 3

Substitute 5 into it:

n = 5

n - 1 = (5) - 1 = 4

n - 2 = (5) - 2 = 3

3(5) - 3 = 12

Their sum is 12

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the answer to question 1 is -8, 28.

step-by-step explanation: