Subtract 72/12 from 75/20
1st number: 3 15/20, 2nd number: 6 0/12
75/20 - 72/12 is -9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
75/20 = 75 × 3/20 × 3 = 225/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
72/12 = 72 × 5/12 × 5 = 360/60 - Subtract the two like fractions:
225/60 - 360/60 = 225 - 360/60 = -135/60 - After reducing the fraction, the answer is -9/4
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