Subtract 81/49 from 42/45
1st number: 42/45, 2nd number: 1 32/49
42/45 - 81/49 is -529/735.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 49 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 45 × 49 = 2205,
42/45 = 42 × 49/45 × 49 = 2058/2205 - Likewise, for the 2nd fraction, since 49 × 45 = 2205,
81/49 = 81 × 45/49 × 45 = 3645/2205 - Subtract the two like fractions:
2058/2205 - 3645/2205 = 2058 - 3645/2205 = -1587/2205 - After reducing the fraction, the answer is -529/735
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