Subtract 54/21 from 18/60
1st number: 18/60, 2nd number: 2 12/21
18/60 - 54/21 is -159/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
18/60 = 18 × 7/60 × 7 = 126/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
54/21 = 54 × 20/21 × 20 = 1080/420 - Subtract the two like fractions:
126/420 - 1080/420 = 126 - 1080/420 = -954/420 - After reducing the fraction, the answer is -159/70
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