Subtract 20/15 from 10/72
1st number: 10/72, 2nd number: 1 5/15
10/72 - 20/15 is -43/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 15 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
10/72 = 10 × 5/72 × 5 = 50/360 - Likewise, for the 2nd fraction, since 15 × 24 = 360,
20/15 = 20 × 24/15 × 24 = 480/360 - Subtract the two like fractions:
50/360 - 480/360 = 50 - 480/360 = -430/360 - After reducing the fraction, the answer is -43/36
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