Subtract 21/30 from 10/25
10/25 - 21/30 is -3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 25 × 6 = 150,
10/25 = 10 × 6/25 × 6 = 60/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
21/30 = 21 × 5/30 × 5 = 105/150 - Subtract the two like fractions:
60/150 - 105/150 = 60 - 105/150 = -45/150 - After reducing the fraction, the answer is -3/10
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