Subtract 21/20 from 45/6
1st number: 7 3/6, 2nd number: 1 1/20
45/6 - 21/20 is 129/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
45/6 = 45 × 10/6 × 10 = 450/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
21/20 = 21 × 3/20 × 3 = 63/60 - Subtract the two like fractions:
450/60 - 63/60 = 450 - 63/60 = 387/60 - After reducing the fraction, the answer is 129/20
- In mixed form: 69/20
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