Subtract 30/75 from 7/42
7/42 - 30/75 is -7/30.
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,
30/75 = 30 × 14/75 × 14 = 420/1050 - Subtract the two like fractions:
175/1050 - 420/1050 = 175 - 420/1050 = -245/1050 - After reducing the fraction, the answer is -7/30
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