Subtract 7/40 from 72/45
1st number: 1 27/45, 2nd number: 7/40
72/45 - 7/40 is 57/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
72/45 = 72 × 8/45 × 8 = 576/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Subtract the two like fractions:
576/360 - 63/360 = 576 - 63/360 = 513/360 - After reducing the fraction, the answer is 57/40
- In mixed form: 117/40
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