Subtract 7/42 from 75/20
1st number: 3 15/20, 2nd number: 7/42
75/20 - 7/42 is 43/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
75/20 = 75 × 21/20 × 21 = 1575/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
7/42 = 7 × 10/42 × 10 = 70/420 - Subtract the two like fractions:
1575/420 - 70/420 = 1575 - 70/420 = 1505/420 - After reducing the fraction, the answer is 43/12
- In mixed form: 37/12
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