Subtract 8/42 from 72/9, Solve 8 0/9

Subtract 8/42 from 72/9

1^st number: 8 0/9, 2^nd number: 8/42

72/9 - 8/42 is 164/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 9 × 14 = 126,
72/9 = 72 × 14/9 × 14 = 1008/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
8/42 = 8 × 3/42 × 3 = 24/126
Subtract the two like fractions:
1008/126 - 24/126 = 1008 - 24/126 = 984/126
After reducing the fraction, the answer is 164/21
In mixed form: 717/21

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