Solve 10 3/4 - 6 4/5

2 answers:

7 0

Alright, so the first thing I would do is find the LCM of the dividends, which is 20. So we have 10 15/20 and 6 16/20. You can either leave it there and just carry the one (20 in this case) for 3 19/20.
If you multiply 10 by 20 and add 15, or 6 by 20 and add 16 (which I think is easier) you get 215/20 - 136/20 = 79/20. It can be simplified from here if you teacher wants it in the future.

docker41 [41]4 years ago

3 0

Solve; 43/4(×5) - 34/5(×4) = 215/20 - 136/20 = 79/20 [ Answer is 79/20 ] Good Luck! :)

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