Subtract 42/4 from 20/36
1st number: 20/36, 2nd number: 10 2/4
20/36 - 42/4 is -179/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
20/36 = 20 × 1/36 × 1 = 20/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
42/4 = 42 × 9/4 × 9 = 378/36 - Subtract the two like fractions:
20/36 - 378/36 = 20 - 378/36 = -358/36 - After reducing the fraction, the answer is -179/18
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