Subtract 18/7 from 42/25
1st number: 1 17/25, 2nd number: 2 4/7
42/25 - 18/7 is -156/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
42/25 = 42 × 7/25 × 7 = 294/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
18/7 = 18 × 25/7 × 25 = 450/175 - Subtract the two like fractions:
294/175 - 450/175 = 294 - 450/175 = -156/175
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