Subtract 21/30 from 42/96
42/96 - 21/30 is -21/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 30 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 96 × 5 = 480,
42/96 = 42 × 5/96 × 5 = 210/480 - Likewise, for the 2nd fraction, since 30 × 16 = 480,
21/30 = 21 × 16/30 × 16 = 336/480 - Subtract the two like fractions:
210/480 - 336/480 = 210 - 336/480 = -126/480 - After reducing the fraction, the answer is -21/80
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