Subtract 20/42 from 7/25
7/25 - 20/42 is -103/525.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
7/25 = 7 × 42/25 × 42 = 294/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
20/42 = 20 × 25/42 × 25 = 500/1050 - Subtract the two like fractions:
294/1050 - 500/1050 = 294 - 500/1050 = -206/1050 - After reducing the fraction, the answer is -103/525
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