Subtract 63/56 from 18/30
1st number: 18/30, 2nd number: 1 7/56
18/30 - 63/56 is -21/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
18/30 = 18 × 28/30 × 28 = 504/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
63/56 = 63 × 15/56 × 15 = 945/840 - Subtract the two like fractions:
504/840 - 945/840 = 504 - 945/840 = -441/840 - After reducing the fraction, the answer is -21/40
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