Subtract 45/21 from 72/6
1st number: 12 0/6, 2nd number: 2 3/21
72/6 - 45/21 is 69/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 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 21 × 2 = 42,
45/21 = 45 × 2/21 × 2 = 90/42 - Subtract the two like fractions:
504/42 - 90/42 = 504 - 90/42 = 414/42 - After reducing the fraction, the answer is 69/7
- In mixed form: 96/7
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