Subtract 7/72 from 5/80
5/80 - 7/72 is -5/144.
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,
5/80 = 5 × 9/80 × 9 = 45/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
7/72 = 7 × 10/72 × 10 = 70/720 - Subtract the two like fractions:
45/720 - 70/720 = 45 - 70/720 = -25/720 - After reducing the fraction, the answer is -5/144
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