Subtract 90/80 from 4/90
1st number: 4/90, 2nd number: 1 10/80
4/90 - 90/80 is -389/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
4/90 = 4 × 8/90 × 8 = 32/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720 - Subtract the two like fractions:
32/720 - 810/720 = 32 - 810/720 = -778/720 - After reducing the fraction, the answer is -389/360
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