Subtract 81/30 from 4/40
1st number: 4/40, 2nd number: 2 21/30
4/40 - 81/30 is -13/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
4/40 = 4 × 3/40 × 3 = 12/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Subtract the two like fractions:
12/120 - 324/120 = 12 - 324/120 = -312/120 - After reducing the fraction, the answer is -13/5
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