Subtract 45/30 from 81/4
1st number: 20 1/4, 2nd number: 1 15/30
81/4 - 45/30 is 75/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
81/4 = 81 × 15/4 × 15 = 1215/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
45/30 = 45 × 2/30 × 2 = 90/60 - Subtract the two like fractions:
1215/60 - 90/60 = 1215 - 90/60 = 1125/60 - After reducing the fraction, the answer is 75/4
- In mixed form: 183/4
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