Subtract 30/63 from 9/40
9/40 - 30/63 is -211/840.
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,
9/40 = 9 × 63/40 × 63 = 567/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
30/63 = 30 × 40/63 × 40 = 1200/2520 - Subtract the two like fractions:
567/2520 - 1200/2520 = 567 - 1200/2520 = -633/2520 - After reducing the fraction, the answer is -211/840
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