Subtract 72/21 from 80/6
1st number: 13 2/6, 2nd number: 3 9/21
80/6 - 72/21 is 208/21.
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,
80/6 = 80 × 7/6 × 7 = 560/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
72/21 = 72 × 2/21 × 2 = 144/42 - Subtract the two like fractions:
560/42 - 144/42 = 560 - 144/42 = 416/42 - After reducing the fraction, the answer is 208/21
- In mixed form: 919/21
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