Subtract 72/45 from 7/4
1st number: 1 3/4, 2nd number: 1 27/45
7/4 - 72/45 is 3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
7/4 = 7 × 45/4 × 45 = 315/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
72/45 = 72 × 4/45 × 4 = 288/180 - Subtract the two like fractions:
315/180 - 288/180 = 315 - 288/180 = 27/180 - After reducing the fraction, the answer is 3/20
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