Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
someone PLEASE help me with math?
1st: What is 2/3 more than -2/21?
The answer I got was 67/42 but it was wrong. The correct answer is 59/42 can someone show me how I am supposed to figure this problem?
2nd: simplify, 7 - 10xy - 6xy. My answer was 4xy + 7 but it was also wrong. The correct answer is -16xy + 7. Again, can someone show me how I am supposed to do this problem?
3 Answers
- 1 decade ago
I can help with the second. (I'm a second grade teacher, so I apologize if my answer sounds like I'm talking to an 8-yr-old). Because 10xy has a subtraction sign in front, you start at -10. Then, you subtract 6 more xy's to get -16 all together. I think you started at 10xy and subtracted 6xy to get 4 xy.
For clarification on the first problem, are you supposed to be adding (2/3) and (-2/21)?
- Anonymous1 decade ago
the first one. u have to take 2/3 of -2/21.... and then add that to -2/21.... which gives u 59/42
- 1 decade ago
i dont know the first one...but one the second...the reason they added 10 and 6 was b/c they are both negative...
there is a negative sign in front of the ten which makes it a negative number...
there is also a negative sign in front of the 6
so u would add em not subtract...
i hope that makes sense
