Subtract 20/42 from 75/40
1st number: 1 35/40, 2nd number: 20/42
75/40 - 20/42 is 235/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
75/40 = 75 × 21/40 × 21 = 1575/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
20/42 = 20 × 20/42 × 20 = 400/840 - Subtract the two like fractions:
1575/840 - 400/840 = 1575 - 400/840 = 1175/840 - After reducing the fraction, the answer is 235/168
- In mixed form: 167/168
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