Subtract 10/80 from 1/72
1/72 - 10/80 is -1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
1/72 = 1 × 10/72 × 10 = 10/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
10/80 = 10 × 9/80 × 9 = 90/720 - Subtract the two like fractions:
10/720 - 90/720 = 10 - 90/720 = -80/720 - After reducing the fraction, the answer is -1/9
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