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adelina 88 [10]
3 years ago
14

Write an equation for the following problem. Then solve the equation and answer the problem.

Mathematics
2 answers:
Naya [18.7K]3 years ago
4 0

Let the 3 numbers be x, x + 1 and x + 2, So:-

x + x + 1 + x + 2 = 21

3x = 21 - 3 = 18

x = 18/3 =  6

The 3 numbers are 6, 7 and 8  Answer


Finger [1]3 years ago
4 0

Let consecutive integers a-1; a; a+1, then


a-1+a+a+1=21


3а=21

a=7.


7-1=6; 7+1=8.


Answer: 6; 7; 8.

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