Subtract 20/63 from 7/40
7/40 - 20/63 is -359/2520.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
7/40 = 7 × 63/40 × 63 = 441/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
20/63 = 20 × 40/63 × 40 = 800/2520 - Subtract the two like fractions:
441/2520 - 800/2520 = 441 - 800/2520 = -359/2520
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