Subtract 72/36 from 20/80
1st number: 20/80, 2nd number: 2 0/36
20/80 - 72/36 is -7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
72/36 = 72 × 20/36 × 20 = 1440/720 - Subtract the two like fractions:
180/720 - 1440/720 = 180 - 1440/720 = -1260/720 - After reducing the fraction, the answer is -7/4
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