tag:blogger.com,1999:blog-13203859.post4096001522651495579..comments2023-09-24T06:14:15.820-04:00Comments on Tiggers don't Jump: New MathJudyhttp://www.blogger.com/profile/08237756183010257014noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-13203859.post-81572074757373701582007-05-23T21:02:00.000-04:002007-05-23T21:02:00.000-04:00What you did was basically 2 steps. I teach that a...What you did was basically 2 steps. I teach that as multiply by -1 and then you can legitimately use the commutative property of addition to reverse the terms. OTOH, you don't really need to reverse the terms to add 4 to both sides once you've multiplied by -1. <BR/><BR/>You eventually have to multiply or divide by a negative number to reach the value of x.Judyhttps://www.blogger.com/profile/08237756183010257014noreply@blogger.comtag:blogger.com,1999:blog-13203859.post-33620034429110097562007-05-23T15:57:00.000-04:002007-05-23T15:57:00.000-04:00Reversing the order of two terms in a subtraction ...Reversing the order of two terms in a subtraction flips the sign of the result. I have no idea whether there is a property for that.<BR/><BR/>4 - 8x = -20<BR/><BR/>8x - 4 = 20<BR/><BR/>8x -4 +4 = 20 +4<BR/><BR/>8x = 24<BR/><BR/>8x/8 = 24/8<BR/><BR/>x = 3<BR/><BR/>'Course, I'd never try to teach it to somebody that way. Your way is better.<BR/><BR/>Or, you can subtract the 4 from both sides and keep the x on the left.<BR/><BR/>-8x = -24 (divide out by -8)<BR/><BR/>x = 3JP Burkehttps://www.blogger.com/profile/16796725364997136448noreply@blogger.comtag:blogger.com,1999:blog-13203859.post-4220195916030258672007-05-22T18:37:00.000-04:002007-05-22T18:37:00.000-04:00Hey i got a question im doing a research paper abo...Hey i got a question im doing a research paper about if prenatal care prevents low birth weight and other birth defects and i read ur blog just curious if u could help i kinda need an interview. I made an account just to message you. Get back to me with ur answer please my email address is Animedart@yahoo.com Thank you<BR/>im spenser btwDarthttps://www.blogger.com/profile/10701765034704095120noreply@blogger.com