Subtract 90/42 from 81/48
1st number: 1 33/48, 2nd number: 2 6/42
81/48 - 90/42 is -51/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
81/48 = 81 × 7/48 × 7 = 567/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
90/42 = 90 × 8/42 × 8 = 720/336 - Subtract the two like fractions:
567/336 - 720/336 = 567 - 720/336 = -153/336 - After reducing the fraction, the answer is -51/112
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