Subtract 20/12 from 90/80
1st number: 1 10/80, 2nd number: 1 8/12
90/80 - 20/12 is -13/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 12 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
90/80 = 90 × 3/80 × 3 = 270/240 - Likewise, for the 2nd fraction, since 12 × 20 = 240,
20/12 = 20 × 20/12 × 20 = 400/240 - Subtract the two like fractions:
270/240 - 400/240 = 270 - 400/240 = -130/240 - After reducing the fraction, the answer is -13/24
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