Subtract 72/42 from 5/4
1st number: 1 1/4, 2nd number: 1 30/42
5/4 - 72/42 is -13/28.
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,
5/4 = 5 × 21/4 × 21 = 105/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
72/42 = 72 × 2/42 × 2 = 144/84 - Subtract the two like fractions:
105/84 - 144/84 = 105 - 144/84 = -39/84 - After reducing the fraction, the answer is -13/28
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