
Re: Simplifying Algebraic Expressions with Subtracted Expressions
Posted:
Nov 12, 2013 10:12 AM


Yes, but 3 as +(3) as well. I have a bigger problem with "=>" instead of "=". The symbol "=> " is for one statement implies another statement rather than that one expression is equal to another. Similarly, the language "solve" instead of "simplify" is inappropriate. The former would involve finding all solutions to a statement or system of statements that involve variables.
Wayne
At 06:21 PM 11/11/2013, MVTutor wrote: >How would you advise students in the example "1(x+23)"? >Can I tell them to drop the parentheses and reverse the signs of each term? >Is the explanation that if we change the subtraction to an addition >we can use the associative property of addition? >Are there alternative methods? >I've seen one book that suggests solving it as follows: >1(x+23) => 1+ 1(x+23)=> then solve 1(x+23) > 1(x)+1(2) (1)(3) >but this seems a bit confusing to me. >Any suggestions? >Thanks, John

