Subtract 90/10 from 42/2
1st number: 21 0/2, 2nd number: 9 0/10
42/2 - 90/10 is 12/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
42/2 = 42 × 5/2 × 5 = 210/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
90/10 = 90 × 1/10 × 1 = 90/10 - Subtract the two like fractions:
210/10 - 90/10 = 210 - 90/10 = 120/10 - After reducing the fraction, the answer is 12/1
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