Subtract 7/42 from 20/50
20/50 - 7/42 is 7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
20/50 = 20 × 21/50 × 21 = 420/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
7/42 = 7 × 25/42 × 25 = 175/1050 - Subtract the two like fractions:
420/1050 - 175/1050 = 420 - 175/1050 = 245/1050 - After reducing the fraction, the answer is 7/30
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