Subtract 21/50 from 4/36
4/36 - 21/50 is -139/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 50 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 36 × 25 = 900,
4/36 = 4 × 25/36 × 25 = 100/900 - Likewise, for the 2nd fraction, since 50 × 18 = 900,
21/50 = 21 × 18/50 × 18 = 378/900 - Subtract the two like fractions:
100/900 - 378/900 = 100 - 378/900 = -278/900 - After reducing the fraction, the answer is -139/450
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