Subtract 20/45 from 10/25
10/25 - 20/45 is -2/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
10/25 = 10 × 9/25 × 9 = 90/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
20/45 = 20 × 5/45 × 5 = 100/225 - Subtract the two like fractions:
90/225 - 100/225 = 90 - 100/225 = -10/225 - After reducing the fraction, the answer is -2/45
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