Subtract 98/90 from 42/80
1st number: 42/80, 2nd number: 1 8/90
42/80 - 98/90 is -203/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
98/90 = 98 × 8/90 × 8 = 784/720 - Subtract the two like fractions:
378/720 - 784/720 = 378 - 784/720 = -406/720 - After reducing the fraction, the answer is -203/360
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