27 - 5.3 -0.7 =
-5.2 - (-1.2) + 5.3 =
-3 x (-41) =
-17.5 - (-7.8) - (-1.2) =
-7.6 - (-1.6) + 3.3
fractions
16/6 + 16/7 - 18/4 =
3 1/3 + (-6 3/4) =
-2/3 - (-1/12) =
-5/6 + (-2/9)
5 2/3 + (-8 3/10) =
-2/3 - (-1/4) =
-2/9 + (-5/6) =
2007-07-18 16:17:11 · 8 answers · asked by Ghazala 2 in Science & Mathematics ➔ Mathematics
1. 21
2. 1.3
3. 123
4. -8.5
5. -2.7
Fractions
1. 38/84 or 19/42
2. -3 5/12
3. -7/12
4. -1 1/18
5. -2 19/30
6. -5/12
7. -1 1/18
I hope this helps!!
2007-07-18 16:32:08 · answer #1 · answered by Helixium 2 · 0⤊ 0⤋
Two - like -(-2) = +2.
One - and one + like -(+2) = -2.
+ and + = +
- and - = +
- and + = -
+ and - = -
Now that you understand the signs, just add or subtract the numbers.
For fractions, make the denominators (the bottom numbers of the fractions) into the same number by multiplying numbers to make them the same. Make sure to multiply the numerator (top number) with the same number to make things even. Example:
I want to add 5/6 with 6/5. The numbers on the bottom need to be the same so I multiply 5 to the first fraction and multiply 6 with the second one. (Don't forget to multiply the top number by those numbers too). That gives: 25/30+36/30. Now you just add the top numbers and keep the bottom number the same. So the final answer is 61/30. Same thing for subtraction. Keep the bottom number the same (after you've made them the same) and subtract.
2007-07-18 23:30:38 · answer #2 · answered by pertinential 5 · 0⤊ 0⤋
Four postings and counting. Exactly the same.
If you really want help from this group, post 3 of your problems. Wait a few minutes and post 3 more of your questions. And so on. Posting the same 12 questions over and over and over and over again will not get you the answers.
2007-07-18 23:22:47 · answer #3 · answered by gordonmorrison 6 · 0⤊ 0⤋
didn't you already ask a question like this? Anyways, I'll say what I said before. If you need help you can use an Internet calculator or get homework help on a website.
2007-07-18 23:22:33 · answer #4 · answered by Leanna 3 · 0⤊ 0⤋
21
1.3
123
-8.5
19/42
-41/12
-7/12
-57/54
-79/30
-5/12
-57/54
2007-07-18 23:31:38 · answer #5 · answered by Anonymous · 0⤊ 0⤋
LOL, everyone on here is asking people to do their homeworks for them.
2007-07-18 23:35:05 · answer #6 · answered by Henry 2 · 0⤊ 0⤋
it is so easy, just use a scientific calculator with fraction key.
2007-07-18 23:23:53 · answer #7 · answered by Anonymous · 0⤊ 0⤋
In case you haven't figured it for yourself, DO YOUR OWN HOMEWORK
2007-07-18 23:20:48 · answer #8 · answered by cattbarf 7 · 0⤊ 0⤋