Subtract 90/80 from 10/18
1st number: 10/18, 2nd number: 1 10/80
10/18 - 90/80 is -41/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
10/18 = 10 × 40/18 × 40 = 400/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720 - Subtract the two like fractions:
400/720 - 810/720 = 400 - 810/720 = -410/720 - After reducing the fraction, the answer is -41/72
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