Subtract 60/40 from 60/42
1st number: 1 18/42, 2nd number: 1 20/40
60/42 - 60/40 is -1/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
60/42 = 60 × 20/42 × 20 = 1200/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
60/40 = 60 × 21/40 × 21 = 1260/840 - Subtract the two like fractions:
1200/840 - 1260/840 = 1200 - 1260/840 = -60/840 - After reducing the fraction, the answer is -1/14
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