Subtract 3/63 from 42/40
1st number: 1 2/40, 2nd number: 3/63
42/40 - 3/63 is 421/420.
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,
42/40 = 42 × 63/40 × 63 = 2646/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
3/63 = 3 × 40/63 × 40 = 120/2520 - Subtract the two like fractions:
2646/2520 - 120/2520 = 2646 - 120/2520 = 2526/2520 - After reducing the fraction, the answer is 421/420
- In mixed form: 11/420
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