Subtract 72/9 from 21/6
1st number: 3 3/6, 2nd number: 8 0/9
21/6 - 72/9 is -9/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
21/6 = 21 × 3/6 × 3 = 63/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
72/9 = 72 × 2/9 × 2 = 144/18 - Subtract the two like fractions:
63/18 - 144/18 = 63 - 144/18 = -81/18 - After reducing the fraction, the answer is -9/2
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