Subtract 21/18 from 42/4
1st number: 10 2/4, 2nd number: 1 3/18
42/4 - 21/18 is 28/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
42/4 = 42 × 9/4 × 9 = 378/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Subtract the two like fractions:
378/36 - 42/36 = 378 - 42/36 = 336/36 - After reducing the fraction, the answer is 28/3
- In mixed form: 91/3
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