Subtract 3/42 from 90/75
1st number: 1 15/75, 2nd number: 3/42
90/75 - 3/42 is 79/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
90/75 = 90 × 14/75 × 14 = 1260/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
3/42 = 3 × 25/42 × 25 = 75/1050 - Subtract the two like fractions:
1260/1050 - 75/1050 = 1260 - 75/1050 = 1185/1050 - After reducing the fraction, the answer is 79/70
- In mixed form: 19/70
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