Subtract 90/42 from 60/20
1st number: 3 0/20, 2nd number: 2 6/42
60/20 - 90/42 is 6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
60/20 = 60 × 21/20 × 21 = 1260/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
90/42 = 90 × 10/42 × 10 = 900/420 - Subtract the two like fractions:
1260/420 - 900/420 = 1260 - 900/420 = 360/420 - After reducing the fraction, the answer is 6/7
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