Subtract 42/35 from 45/12
1st number: 3 9/12, 2nd number: 1 7/35
45/12 - 42/35 is 51/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
45/12 = 45 × 35/12 × 35 = 1575/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
42/35 = 42 × 12/35 × 12 = 504/420 - Subtract the two like fractions:
1575/420 - 504/420 = 1575 - 504/420 = 1071/420 - After reducing the fraction, the answer is 51/20
- In mixed form: 211/20
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