Subtract 18/9 from 30/80
1st number: 30/80, 2nd number: 2 0/9
30/80 - 18/9 is -13/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
30/80 = 30 × 9/80 × 9 = 270/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
18/9 = 18 × 80/9 × 80 = 1440/720 - Subtract the two like fractions:
270/720 - 1440/720 = 270 - 1440/720 = -1170/720 - After reducing the fraction, the answer is -13/8
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