Question 55497: The sum of three consective odd integers is 27
Show equation.
Answer by funmath(2933)   (Show Source):
You can put this solution on YOUR website! The sum of three consective odd integers is 27
Show equation.
When we are counting odd numbers, we're counting by 2's.
1,1+2,1+2+2,1+2+2+2,...=1,3,5,7
Therefore,
Let the 1st integer be: x
Then the 2nd integer is: x+2
Then the 3rd integer is:x+2+2=x+4
Sum means add.
The equation to solve is:
(x)+(x+2)+(x+4)=27
x+x+2+x+4=27
3x+6=27
3x+6-6=27-6
3x=21
3x/3=21/7
x=7
The 1st integer is:x=7
The 2nd integer is:x+2=7+2=9
The 3rd integer is:x+4=7+4=11
:
Check, do these three integers add up to 27?
Yes, 7+9+11=27, so we're right!!!
Happy Calculating!!!
|
|
|
