Subtract 81/5 from 30/4
1st number: 7 2/4, 2nd number: 16 1/5
30/4 - 81/5 is -87/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
30/4 = 30 × 5/4 × 5 = 150/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
81/5 = 81 × 4/5 × 4 = 324/20 - Subtract the two like fractions:
150/20 - 324/20 = 150 - 324/20 = -174/20 - After reducing the fraction, the answer is -87/10
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