Subtract 5/30 from 1/28, Solve 1/28

Subtract 5/30 from 1/28

1/28 - 5/30 is -11/84.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 28 × 15 = 420,
1/28 = 1 × 15/28 × 15 = 15/420
Likewise, for the 2nd fraction, since 30 × 14 = 420,
5/30 = 5 × 14/30 × 14 = 70/420
Subtract the two like fractions:
15/420 - 70/420 = 15 - 70/420 = -55/420
After reducing the fraction, the answer is -11/84

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