Subtract 45/70 from 81/4
1st number: 20 1/4, 2nd number: 45/70
81/4 - 45/70 is 549/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
81/4 = 81 × 35/4 × 35 = 2835/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
45/70 = 45 × 2/70 × 2 = 90/140 - Subtract the two like fractions:
2835/140 - 90/140 = 2835 - 90/140 = 2745/140 - After reducing the fraction, the answer is 549/28
- In mixed form: 1917/28
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