Subtract 90/48 from 15/20
1st number: 15/20, 2nd number: 1 42/48
15/20 - 90/48 is -9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
15/20 = 15 × 12/20 × 12 = 180/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
90/48 = 90 × 5/48 × 5 = 450/240 - Subtract the two like fractions:
180/240 - 450/240 = 180 - 450/240 = -270/240 - After reducing the fraction, the answer is -9/8
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