Subtract 90/18 from 42/10
1st number: 4 2/10, 2nd number: 5 0/18
42/10 - 90/18 is -4/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
42/10 = 42 × 9/10 × 9 = 378/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Subtract the two like fractions:
378/90 - 450/90 = 378 - 450/90 = -72/90 - After reducing the fraction, the answer is -4/5
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