Subtract 42/4 from 49/81
1st number: 49/81, 2nd number: 10 2/4
49/81 - 42/4 is -1603/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
49/81 = 49 × 4/81 × 4 = 196/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
42/4 = 42 × 81/4 × 81 = 3402/324 - Subtract the two like fractions:
196/324 - 3402/324 = 196 - 3402/324 = -3206/324 - After reducing the fraction, the answer is -1603/162
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