Subtract 45/40 from 20/49
1st number: 20/49, 2nd number: 1 5/40
20/49 - 45/40 is -281/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 49 × 40 = 1960,
20/49 = 20 × 40/49 × 40 = 800/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
45/40 = 45 × 49/40 × 49 = 2205/1960 - Subtract the two like fractions:
800/1960 - 2205/1960 = 800 - 2205/1960 = -1405/1960 - After reducing the fraction, the answer is -281/392
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