Subtract 20/42 from 45/3
1st number: 15 0/3, 2nd number: 20/42
45/3 - 20/42 is 305/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 3 × 14 = 42,
45/3 = 45 × 14/3 × 14 = 630/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
20/42 = 20 × 1/42 × 1 = 20/42 - Subtract the two like fractions:
630/42 - 20/42 = 630 - 20/42 = 610/42 - After reducing the fraction, the answer is 305/21
- In mixed form: 1411/21
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