Subtract 63/18 from 42/90
1st number: 42/90, 2nd number: 3 9/18
42/90 - 63/18 is -91/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
63/18 = 63 × 5/18 × 5 = 315/90 - Subtract the two like fractions:
42/90 - 315/90 = 42 - 315/90 = -273/90 - After reducing the fraction, the answer is -91/30
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