Subtract 84/8 from 15/40
1st number: 15/40, 2nd number: 10 4/8
15/40 - 84/8 is -81/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
15/40 = 15 × 1/40 × 1 = 15/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
84/8 = 84 × 5/8 × 5 = 420/40 - Subtract the two like fractions:
15/40 - 420/40 = 15 - 420/40 = -405/40 - After reducing the fraction, the answer is -81/8
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