Subtract 21/9 from 42/60
1st number: 42/60, 2nd number: 2 3/9
42/60 - 21/9 is -49/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
42/60 = 42 × 3/60 × 3 = 126/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
21/9 = 21 × 20/9 × 20 = 420/180 - Subtract the two like fractions:
126/180 - 420/180 = 126 - 420/180 = -294/180 - After reducing the fraction, the answer is -49/30
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