Subtract 42/15 from 1/90
1st number: 1/90, 2nd number: 2 12/15
1/90 - 42/15 is -251/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
42/15 = 42 × 6/15 × 6 = 252/90 - Subtract the two like fractions:
1/90 - 252/90 = 1 - 252/90 = -251/90
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