Please work out this math problem?

Question

Please figure out this fraction: 15 over 2, divided by 4 over 7...do i need to recipicate the second number? please help me..thank you.

Answer 1

15 .... 4
---- ÷ ----
2 ....... 7

Just invert and multiply:
15 .... 7
---- x ----
2 ....... 4

105
-----
. 8

Convert to a mixed fraction:
= 13 1/8

Answer 2

15/2 divided by 4/7

first you need the reciprical of 4/7 which is 7/4. also turn the diviion sign into a multiplication sign.

15/2 X 7/4
15 X 7 is 105 and 2 X 4 is 8 so its 105/8
I don't think you can simplify, but if you need to make it a mixed number its 13 1/8 as a decimal its 13.125

Answer 3

instead of dividing 2 fractions swap the top and bottom numbers of one fraction over then multiply by the other fraction
eg. 15/2 * 7/4 or 2/15 * 4/7

so your answer is 105/8

Answer 4

15/2 divided by 4/7

that is the same as:
15/2 * 7/4

= 105/8

Answer 5

15/2 divided by 4/7 you have to flip 4/7 to 7/4 and multiply 15/2 and 7/4 and you will get 105/8

Answer 6

Yes recipricate the 2nd fraction, then multiply and simplfy.

15/2 * 7/4 = 105/8 = 13.125 or 13 and 1/8

Answer 7

15/2 divided by 4/7
15/2 times 7/4
105/8 (the top numbers times the bottom ones)
13.125

Answer 8

Yes. You need to recipricate the second number and change division to multiplication. It should be like this:

15/2 X 7/4

Answer 9

yes invert the 4 over 7 and multiply the two so it becomes 15/2 multiply by 7/4

Answer 10

(15/2)/(4/7) = (15/2)(7/4)

The reason we multiply the upper fraction by the reciprocal of the lower fraction is shown as follows:

(a/b)/(c/d)

The lower fraction becomes 1 if I multiply it by d/c (its reciprocal

(c/d)(d/c) = 1

Whatever is done to the lower fraction must be done to the upper fraction as well

(a/b)/(c/d) = [(a/b)(d/c)]/[(c/d)(d/c)] = [ad/bc]/[1] = ad/bc