Subtract 90/96 from 15/20
15/20 - 90/96 is -3/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 96 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 20 × 24 = 480,
15/20 = 15 × 24/20 × 24 = 360/480 - Likewise, for the 2nd fraction, since 96 × 5 = 480,
90/96 = 90 × 5/96 × 5 = 450/480 - Subtract the two like fractions:
360/480 - 450/480 = 360 - 450/480 = -90/480 - After reducing the fraction, the answer is -3/16
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