Subtract 20/12 from 25/45
1st number: 25/45, 2nd number: 1 8/12
25/45 - 20/12 is -10/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
25/45 = 25 × 4/45 × 4 = 100/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
20/12 = 20 × 15/12 × 15 = 300/180 - Subtract the two like fractions:
100/180 - 300/180 = 100 - 300/180 = -200/180 - After reducing the fraction, the answer is -10/9
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