Subtract 20/50 from 42/72
42/72 - 20/50 is 11/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 50 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
42/72 = 42 × 25/72 × 25 = 1050/1800 - Likewise, for the 2nd fraction, since 50 × 36 = 1800,
20/50 = 20 × 36/50 × 36 = 720/1800 - Subtract the two like fractions:
1050/1800 - 720/1800 = 1050 - 720/1800 = 330/1800 - After reducing the fraction, the answer is 11/60
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