Subtract 9/20 from 50/42
1st number: 1 8/42, 2nd number: 9/20
50/42 - 9/20 is 311/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
50/42 = 50 × 10/42 × 10 = 500/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
9/20 = 9 × 21/20 × 21 = 189/420 - Subtract the two like fractions:
500/420 - 189/420 = 500 - 189/420 = 311/420
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