Turning a Sentence into a Variable Expression
Date: 9/7/96 at 14:12:9 From: Anonymous Subject: Turning a Sentence into a Variable Expression I have a problem expressing: "The difference when a number T is subtracted from 18" Which number goes first? How do I write this out?
Date: 9/8/96 at 13:33:1 From: Doctor Robert Subject: Re: Turning a Sentence into a Variable Expression If T is subtracted from 18, then the number 18 becomes smaller, so the correct expression is 18 - T. (Try it for different values of T like 1,3,5, for example, and you'll see how this works). Try looking at another problem: "Reduce T by 18." The correct expression for this would be T - 18. Practice on problems like these: Three less than x x less than thirteen Cheers. -Doctor Robert, The Math Forum Check out our web site! http://mathforum.org/dr.math/
Search the Dr. Math Library:
Ask Dr. MathTM
© 1994-2013 The Math Forum