Subtract 72/28 from 1/30, Solve 1/30

Subtract 72/28 from 1/30

1^st number: 1/30, 2^nd number: 2 16/28

1/30 - 72/28 is -533/210.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 30 × 14 = 420,
1/30 = 1 × 14/30 × 14 = 14/420
Likewise, for the 2nd fraction, since 28 × 15 = 420,
72/28 = 72 × 15/28 × 15 = 1080/420
Subtract the two like fractions:
14/420 - 1080/420 = 14 - 1080/420 = -1066/420
After reducing the fraction, the answer is -533/210

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