Subtract 90/9 from 42/5
1st number: 8 2/5, 2nd number: 10 0/9
42/5 - 90/9 is -8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
42/5 = 42 × 9/5 × 9 = 378/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
90/9 = 90 × 5/9 × 5 = 450/45 - Subtract the two like fractions:
378/45 - 450/45 = 378 - 450/45 = -72/45 - After reducing the fraction, the answer is -8/5
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