Subtract 4/80 from 40/72
40/72 - 4/80 is 91/180.
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,
40/72 = 40 × 10/72 × 10 = 400/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
4/80 = 4 × 9/80 × 9 = 36/720 - Subtract the two like fractions:
400/720 - 36/720 = 400 - 36/720 = 364/720 - After reducing the fraction, the answer is 91/180
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