Subtract 1/3 from 72/42
1st number: 1 30/42, 2nd number: 1/3
72/42 - 1/3 is 29/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
72/42 = 72 × 1/42 × 1 = 72/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
1/3 = 1 × 14/3 × 14 = 14/42 - Subtract the two like fractions:
72/42 - 14/42 = 72 - 14/42 = 58/42 - After reducing the fraction, the answer is 29/21
- In mixed form: 18/21
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