8 3/4 x 5 1/7 ?

1 Answer
hmellor
Mar 16, 2018

#45#

Explanation:

Start by converting your mixed numbers into improper fractions. To do this, lets look at #8 3/4#.

To convert a mixed number into an improper fraction, you multiply the denominator (4) by the number out in front (8) , then add the numerator (3), then put that number over the original denominator (4) So to write that out, you take #4*8+3# , which equals #35#, so #8 3/4 = 35/4#.
Repeat this with #5 1/7# to get #36/7#.
Now, we are able to easily multiply across:
#35/4 * 36/7 = 1260/28 = 45#

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