Subtract 81/10 from 18/4
1st number: 4 2/4, 2nd number: 8 1/10
18/4 - 81/10 is -18/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
18/4 = 18 × 5/4 × 5 = 90/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
81/10 = 81 × 2/10 × 2 = 162/20 - Subtract the two like fractions:
90/20 - 162/20 = 90 - 162/20 = -72/20 - After reducing the fraction, the answer is -18/5
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