Subtract 72/40 from 50/20
1st number: 2 10/20, 2nd number: 1 32/40
50/20 - 72/40 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
50/20 = 50 × 2/20 × 2 = 100/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
72/40 = 72 × 1/40 × 1 = 72/40 - Subtract the two like fractions:
100/40 - 72/40 = 100 - 72/40 = 28/40 - After reducing the fraction, the answer is 7/10
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