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three consecutive number add up to 21.what are they?​

Sagot :

Answer: 6, 7, 8

Step-by-step 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.

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