Subtract 18/20 from 28/4
1st number: 7 0/4, 2nd number: 18/20
28/4 - 18/20 is 61/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
28/4 = 28 × 5/4 × 5 = 140/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
18/20 = 18 × 1/20 × 1 = 18/20 - Subtract the two like fractions:
140/20 - 18/20 = 140 - 18/20 = 122/20 - After reducing the fraction, the answer is 61/10
- In mixed form: 61/10
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