Subtract 21/40 from 12/3
1st number: 4 0/3, 2nd number: 21/40
12/3 - 21/40 is 139/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 3 × 40 = 120,
12/3 = 12 × 40/3 × 40 = 480/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Subtract the two like fractions:
480/120 - 63/120 = 480 - 63/120 = 417/120 - After reducing the fraction, the answer is 139/40
- In mixed form: 319/40
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