the difference of two numbers is 27....

kittiecs

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Joined
Jul 2, 2007
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12
the difference of two numbers is 27. the second number is 1 less than 3 times the first. what are the two numbers?

How would I start to figure this out.
thank you
 

TchrWill

Full Member
Joined
Jul 7, 2005
Messages
856
the difference of two numbers is 27. the second number is 1 less than 3 times the first. what are the two numbers?
x - y = 27

y = 3x - 1

I suspect you can take it from here.
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,444
kittiecs said:
the difference of two numbers is 27. the second number is 1 less than 3 times the first. what are the two numbers?
How would I start to figure this out.
thank you
Hmmm...there's 2 answers (positive and negative);
since you're apparently learning this stuff, I presume the positive answer
is what's expected; re-word your problem this way:
The difference of two numbers is 27.
The larger number is 1 less than 3 times the smaller.
What are the two numbers?

Let x = larger, y = smaller ; then:
x - y = 27 [1]
x = 3y - 1 [2]

Substitute [2] in [1]: if you don't know what that means,
you need classroom help.
 
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