Subtract 18/25 from 4/42
4/42 - 18/25 is -328/525.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 25 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
4/42 = 4 × 25/42 × 25 = 100/1050 - Likewise, for the 2nd fraction, since 25 × 42 = 1050,
18/25 = 18 × 42/25 × 42 = 756/1050 - Subtract the two like fractions:
100/1050 - 756/1050 = 100 - 756/1050 = -656/1050 - After reducing the fraction, the answer is -328/525
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