Subtract 72/42 from 75/4
1st number: 18 3/4, 2nd number: 1 30/42
75/4 - 72/42 is 477/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
75/4 = 75 × 21/4 × 21 = 1575/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
72/42 = 72 × 2/42 × 2 = 144/84 - Subtract the two like fractions:
1575/84 - 144/84 = 1575 - 144/84 = 1431/84 - After reducing the fraction, the answer is 477/28
- In mixed form: 171/28
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