Subtract 56/21 from 72/36
1st number: 2 0/36, 2nd number: 2 14/21
72/36 - 56/21 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
72/36 = 72 × 7/36 × 7 = 504/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
56/21 = 56 × 12/21 × 12 = 672/252 - Subtract the two like fractions:
504/252 - 672/252 = 504 - 672/252 = -168/252 - After reducing the fraction, the answer is -2/3
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