Subtract 21/75 from 10/80
10/80 - 21/75 is -31/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 75 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 80 × 15 = 1200,
10/80 = 10 × 15/80 × 15 = 150/1200 - Likewise, for the 2nd fraction, since 75 × 16 = 1200,
21/75 = 21 × 16/75 × 16 = 336/1200 - Subtract the two like fractions:
150/1200 - 336/1200 = 150 - 336/1200 = -186/1200 - After reducing the fraction, the answer is -31/200
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