Subtract 90/9 from 45/80
1st number: 45/80, 2nd number: 10 0/9
45/80 - 90/9 is -151/16.
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,
45/80 = 45 × 9/80 × 9 = 405/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
90/9 = 90 × 80/9 × 80 = 7200/720 - Subtract the two like fractions:
405/720 - 7200/720 = 405 - 7200/720 = -6795/720 - After reducing the fraction, the answer is -151/16
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