Subtract 72/40 from 20/36
1st number: 20/36, 2nd number: 1 32/40
20/36 - 72/40 is -56/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
20/36 = 20 × 10/36 × 10 = 200/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
72/40 = 72 × 9/40 × 9 = 648/360 - Subtract the two like fractions:
200/360 - 648/360 = 200 - 648/360 = -448/360 - After reducing the fraction, the answer is -56/45
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