Subtract 72/20 from 4/40
1st number: 4/40, 2nd number: 3 12/20
4/40 - 72/20 is -7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
4/40 = 4 × 1/40 × 1 = 4/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
72/20 = 72 × 2/20 × 2 = 144/40 - Subtract the two like fractions:
4/40 - 144/40 = 4 - 144/40 = -140/40 - After reducing the fraction, the answer is -7/2
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