Subtract 10/72 from 5/20
5/20 - 10/72 is 1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
5/20 = 5 × 18/20 × 18 = 90/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
10/72 = 10 × 5/72 × 5 = 50/360 - Subtract the two like fractions:
90/360 - 50/360 = 90 - 50/360 = 40/360 - After reducing the fraction, the answer is 1/9
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