Subtract 40/72 from 10/25
10/25 - 40/72 is -7/45.
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,
10/25 = 10 × 72/25 × 72 = 720/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
40/72 = 40 × 25/72 × 25 = 1000/1800 - Subtract the two like fractions:
720/1800 - 1000/1800 = 720 - 1000/1800 = -280/1800 - After reducing the fraction, the answer is -7/45
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