Subtract 27/72 from 42/20
1st number: 2 2/20, 2nd number: 27/72
42/20 - 27/72 is 69/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
42/20 = 42 × 18/20 × 18 = 756/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
27/72 = 27 × 5/72 × 5 = 135/360 - Subtract the two like fractions:
756/360 - 135/360 = 756 - 135/360 = 621/360 - After reducing the fraction, the answer is 69/40
- In mixed form: 129/40
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