Subtract 15/72 from 1/80
1/80 - 15/72 is -47/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
1/80 = 1 × 9/80 × 9 = 9/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
15/72 = 15 × 10/72 × 10 = 150/720 - Subtract the two like fractions:
9/720 - 150/720 = 9 - 150/720 = -141/720 - After reducing the fraction, the answer is -47/240
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