Subtract 18/80 from 42/14, Solve 3 0/14

Subtract 18/80 from 42/14

1^st number: 3 0/14, 2^nd number: 18/80

42/14 - 18/80 is 111/40.

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,
42/14 = 42 × 40/14 × 40 = 1680/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560
Subtract the two like fractions:
1680/560 - 126/560 = 1680 - 126/560 = 1554/560
After reducing the fraction, the answer is 111/40
In mixed form: 231/40

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