Subtract 60/42 from 12/9, Solve 1 3/9

Subtract 60/42 from 12/9

1^st number: 1 3/9, 2^nd number: 1 18/42

12/9 - 60/42 is -2/21.

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,
12/9 = 12 × 14/9 × 14 = 168/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
60/42 = 60 × 3/42 × 3 = 180/126
Subtract the two like fractions:
168/126 - 180/126 = 168 - 180/126 = -12/126
After reducing the fraction, the answer is -2/21

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