Simplifying ExpressionsDate: 8/31/96 at 20:45:21 From: Al Schmeh Subject: Simplifying Expressions How do I simplify (y + 3) - 2(y + 7)? Date: 9/2/96 at 13:17:2 From: Doctor Jodi Subject: Re: Simplifying Expressions Hi there! Let me show you how to do a similar problem and then perhaps you will have an easier time with the one you sent us. (y + 6) - 3(y + 4) The pieces inside the parentheses can't be simplified yet, so I will keep them together and multiply 3(y+4) out to get 3y +12. Now my problem looks like: (y + 6) - (3y + 12) Now we can subtract, but we have to DISTRIBUTE the - sign like this: (y + 6) - 3y - 12 Okay? Now I can add like terms (-3y to y and 6 to -12) to get -2y -6 which is simplified. Does that make sense? Write us back if you need more help! -Doctor Jodi, The Math Forum Check out our web site! http://mathforum.org/dr.math/ |
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