Subtract 90/75 from 7/42
1st number: 7/42, 2nd number: 1 15/75
7/42 - 90/75 is -31/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 75 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
7/42 = 7 × 25/42 × 25 = 175/1050 - Likewise, for the 2nd fraction, since 75 × 14 = 1050,
90/75 = 90 × 14/75 × 14 = 1260/1050 - Subtract the two like fractions:
175/1050 - 1260/1050 = 175 - 1260/1050 = -1085/1050 - After reducing the fraction, the answer is -31/30
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