Subtract 16/30 from 21/56
21/56 - 16/30 is -19/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
16/30 = 16 × 28/30 × 28 = 448/840 - Subtract the two like fractions:
315/840 - 448/840 = 315 - 448/840 = -133/840 - After reducing the fraction, the answer is -19/120
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