Subtract 21/4 from 54/80
1st number: 54/80, 2nd number: 5 1/4
54/80 - 21/4 is -183/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 4 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
54/80 = 54 × 1/80 × 1 = 54/80 - Likewise, for the 2nd fraction, since 4 × 20 = 80,
21/4 = 21 × 20/4 × 20 = 420/80 - Subtract the two like fractions:
54/80 - 420/80 = 54 - 420/80 = -366/80 - After reducing the fraction, the answer is -183/40
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