104k views
22 votes
Three consecutive number add up to 21.what are they?​

User JF Bastien
by
7.4k points

1 Answer

4 votes

Answer: 6, 7, 8

Explanation:

Let the middle number = x. Then, the three consecutive numbers are x-1, x, and x+1.

We can now set up an equation.

x - 1 + x + x + 1 = 21

3x = 21

x = 7.

Therefore, the three consecutive numbers are 6, 7, 8.

User Yarek
by
6.6k points
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