Subtract 45/28 from 30/20
1st number: 1 10/20, 2nd number: 1 17/28
30/20 - 45/28 is -3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
45/28 = 45 × 5/28 × 5 = 225/140 - Subtract the two like fractions:
210/140 - 225/140 = 210 - 225/140 = -15/140 - After reducing the fraction, the answer is -3/28
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