Can You Please Help With Math
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Can You Please Help With Math

[From: ] [author: ] [Date: 12-07-11] [Hit: ]
!!!-1.2.3/4 multiply top and bottom by 5,......
Please help their do tommrrow. 1. 7/12 - 17/48 2. 3/4 - 1/5 3. 5/9 - 7/18 4. 15/16 - 5/8 5. 7/8 - 7/32
6. 5/16 - 1/4. Can you please show your work.
Thanks so MUCH!!!!

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1. 7/12-17/48
multiply 7/12 by four
28/48-17/48= 11/48

2.3/4-1/5
3/4 multiply top and bottom by 5, 1/5 by 4
15/20-4/20=11/20

3.5/9-7/18
5/9 multipl by 2 top and bottom
10/18-7/18= 3/18=1/6

4.15/16-5/8
5/8 times 2
15/16-10/16=5/16

5. 7/8-7/32
multiple 7/8 by 4 top and bottom
28/32-7/32=21/32

6. 5/16-1/4
1/4 multiply by 4
5/16-4/16=1/16

The main thing with all of these problems is that you need to get the denometer to be the same for both of the numbers in order to subtract them.

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first you need to find the common denominators between the two fractions. for # 1 the common denominator would be 48. so multiply 7/12 x 4/4 to get 28/48. then subtract across the tops to get 28-17 = 11. 11/48 cannot simplify so that's your answer.

number 2 the common denominator is 20 so multiply 3/4 by 5/5 to get 15/20 and then multiply 1/5 by 4/4 to get 4/20. subtract across the tops to get 11/20 which wont simplify so that's your answer.

for number 3 the common denominator is 18. multiply 5/9 by 2/2 to get 10/18. subtract to get 3/18 which simplifies to 1/6.

number 4 the common denominator is 16. multiply 5/8 by 2/2 to get 10/16. subtract 15-10 to get 5/16 which doesnt simplify.

number 5 32 is the common denominator. 7/8 times 4/4 gives you 28/32. 28-7 = 21/32 which cannot be simplified.

number 6 the common denominator is 16. 1/4 times 4/4 gives you 4/16 so you are left with 1/16.

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ARE YOU KIDDING ME?

You divide the numbers first and then subtract...

Frightening for the future of our children.
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