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julsineya [31]
3 years ago
15

The sum of 3 consecutive odd numbers is 69. What is the third number in this sequence?

Mathematics
2 answers:
Phoenix [80]3 years ago
8 0
-------------------------------------------------------------
Define x :
-------------------------------------------------------------
Let the numbers be x, x+2 and x+4

-------------------------------------------------------------
Construct equation :
-------------------------------------------------------------
The sum of these number is 69
x + x + 2 + x + 4 = 69

-------------------------------------------------------------
Solve x:
-------------------------------------------------------------
x + x + 2 + x + 4 = 69
3x + 6 = 69
3x = 63
x = 21

-------------------------------------------------------------
Find the numbers :
-------------------------------------------------------------
x = 21
x+ 2 = 23
x + 4 = 25

---------------------------------------------------------------------------
Answer: The third number in the sequence is 25.
----------------------------------------------------------------------------
Kisachek [45]3 years ago
3 0

Answer:

x + x + 2 + x + 4 = 69


-------------------------------------------------------------

Solve x:

-------------------------------------------------------------

x + x + 2 + x + 4 = 69

3x + 6 = 69

3x =

Find the numbers :


x = 21

x+ 2 = 23

x + 4 = 25



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