Subtract 21/25 from 20/30
20/30 - 21/25 is -13/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 25 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
20/30 = 20 × 5/30 × 5 = 100/150 - Likewise, for the 2nd fraction, since 25 × 6 = 150,
21/25 = 21 × 6/25 × 6 = 126/150 - Subtract the two like fractions:
100/150 - 126/150 = 100 - 126/150 = -26/150 - After reducing the fraction, the answer is -13/75
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