Subtract 42/56 from 21/9
1st number: 2 3/9, 2nd number: 42/56
21/9 - 42/56 is 19/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 9 × 56 = 504,
21/9 = 21 × 56/9 × 56 = 1176/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
42/56 = 42 × 9/56 × 9 = 378/504 - Subtract the two like fractions:
1176/504 - 378/504 = 1176 - 378/504 = 798/504 - After reducing the fraction, the answer is 19/12
- In mixed form: 17/12
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