Subtract 90/80 from 18/36
1st number: 18/36, 2nd number: 1 10/80
18/36 - 90/80 is -5/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
18/36 = 18 × 20/36 × 20 = 360/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720 - Subtract the two like fractions:
360/720 - 810/720 = 360 - 810/720 = -450/720 - After reducing the fraction, the answer is -5/8
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