Subtract 21/42 from 72/6
1st number: 12 0/6, 2nd number: 21/42
72/6 - 21/42 is 23/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
72/6 = 72 × 7/6 × 7 = 504/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Subtract the two like fractions:
504/42 - 21/42 = 504 - 21/42 = 483/42 - After reducing the fraction, the answer is 23/2
- In mixed form: 111/2
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