Subtract 42/72 from 7/25
7/25 - 42/72 is -91/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 25 × 72 = 1800,
7/25 = 7 × 72/25 × 72 = 504/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
42/72 = 42 × 25/72 × 25 = 1050/1800 - Subtract the two like fractions:
504/1800 - 1050/1800 = 504 - 1050/1800 = -546/1800 - After reducing the fraction, the answer is -91/300
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