Subtract 28/30 from 10/84
10/84 - 28/30 is -57/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
28/30 = 28 × 14/30 × 14 = 392/420 - Subtract the two like fractions:
50/420 - 392/420 = 50 - 392/420 = -342/420 - After reducing the fraction, the answer is -57/70
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