Subtract 42/50 from 18/36
18/36 - 42/50 is -17/50.
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,
18/36 = 18 × 25/36 × 25 = 450/900 - Likewise, for the 2nd fraction, since 50 × 18 = 900,
42/50 = 42 × 18/50 × 18 = 756/900 - Subtract the two like fractions:
450/900 - 756/900 = 450 - 756/900 = -306/900 - After reducing the fraction, the answer is -17/50
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