Subtract 42/25 from 7/18
1st number: 7/18, 2nd number: 1 17/25
7/18 - 42/25 is -581/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
7/18 = 7 × 25/18 × 25 = 175/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
42/25 = 42 × 18/25 × 18 = 756/450 - Subtract the two like fractions:
175/450 - 756/450 = 175 - 756/450 = -581/450
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