Subtract 30/15 from 72/14, Solve 5 2/14

Subtract 30/15 from 72/14

1^st number: 5 2/14, 2^nd number: 2 0/15

72/14 - 30/15 is 22/7.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 14 × 15 = 210,
72/14 = 72 × 15/14 × 15 = 1080/210
Likewise, for the 2nd fraction, since 15 × 14 = 210,
30/15 = 30 × 14/15 × 14 = 420/210
Subtract the two like fractions:
1080/210 - 420/210 = 1080 - 420/210 = 660/210
After reducing the fraction, the answer is 22/7
In mixed form: 31/7

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