Subtract 21/40 from 72/6
1st number: 12 0/6, 2nd number: 21/40
72/6 - 21/40 is 459/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 6 × 20 = 120,
72/6 = 72 × 20/6 × 20 = 1440/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Subtract the two like fractions:
1440/120 - 63/120 = 1440 - 63/120 = 1377/120 - After reducing the fraction, the answer is 459/40
- In mixed form: 1119/40
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