Subtract 20/3 from 7/40
1st number: 7/40, 2nd number: 6 2/3
7/40 - 20/3 is -779/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
20/3 = 20 × 40/3 × 40 = 800/120 - Subtract the two like fractions:
21/120 - 800/120 = 21 - 800/120 = -779/120
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