Subtract 40/28 from 20/45
1st number: 20/45, 2nd number: 1 12/28
20/45 - 40/28 is -62/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
20/45 = 20 × 28/45 × 28 = 560/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
40/28 = 40 × 45/28 × 45 = 1800/1260 - Subtract the two like fractions:
560/1260 - 1800/1260 = 560 - 1800/1260 = -1240/1260 - After reducing the fraction, the answer is -62/63
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