Subtract 21/36 from 25/80
25/80 - 21/36 is -13/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
25/80 = 25 × 9/80 × 9 = 225/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
21/36 = 21 × 20/36 × 20 = 420/720 - Subtract the two like fractions:
225/720 - 420/720 = 225 - 420/720 = -195/720 - After reducing the fraction, the answer is -13/48
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