Subtract 72/80 from 18/14, Solve 1 4/14

Subtract 72/80 from 18/14

1^st number: 1 4/14, 2^nd number: 72/80

18/14 - 72/80 is 27/70.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 14 × 40 = 560,
18/14 = 18 × 40/14 × 40 = 720/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
72/80 = 72 × 7/80 × 7 = 504/560
Subtract the two like fractions:
720/560 - 504/560 = 720 - 504/560 = 216/560
After reducing the fraction, the answer is 27/70

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