Subtract 3/18 from 25/42
25/42 - 3/18 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
25/42 = 25 × 3/42 × 3 = 75/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126 - Subtract the two like fractions:
75/126 - 21/126 = 75 - 21/126 = 54/126 - After reducing the fraction, the answer is 3/7
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