Subtract 15/20 from 42/50
42/50 - 15/20 is 9/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 50 × 2 = 100,
42/50 = 42 × 2/50 × 2 = 84/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
15/20 = 15 × 5/20 × 5 = 75/100 - Subtract the two like fractions:
84/100 - 75/100 = 84 - 75/100 = 9/100
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