Subtract 72/40 from 3/9
1st number: 3/9, 2nd number: 1 32/40
3/9 - 72/40 is -22/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
3/9 = 3 × 40/9 × 40 = 120/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
72/40 = 72 × 9/40 × 9 = 648/360 - Subtract the two like fractions:
120/360 - 648/360 = 120 - 648/360 = -528/360 - After reducing the fraction, the answer is -22/15
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