Subtract 20/30 from 12/56
12/56 - 20/30 is -19/42.
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,
12/56 = 12 × 15/56 × 15 = 180/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
20/30 = 20 × 28/30 × 28 = 560/840 - Subtract the two like fractions:
180/840 - 560/840 = 180 - 560/840 = -380/840 - After reducing the fraction, the answer is -19/42
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