Subtract 24/21 from 80/12, Solve 6 8/12

Subtract 24/21 from 80/12

1^st number: 6 8/12, 2^nd number: 1 3/21

80/12 - 24/21 is 116/21.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
80/12 = 80 × 7/12 × 7 = 560/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
24/21 = 24 × 4/21 × 4 = 96/84
Subtract the two like fractions:
560/84 - 96/84 = 560 - 96/84 = 464/84
After reducing the fraction, the answer is 116/21
In mixed form: 511/21

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