Subtract 20/10 from 15/72
1st number: 15/72, 2nd number: 2 0/10
15/72 - 20/10 is -43/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
15/72 = 15 × 5/72 × 5 = 75/360 - Likewise, for the 2nd fraction, since 10 × 36 = 360,
20/10 = 20 × 36/10 × 36 = 720/360 - Subtract the two like fractions:
75/360 - 720/360 = 75 - 720/360 = -645/360 - After reducing the fraction, the answer is -43/24
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