Subtract 49/42 from 27/9, Solve 3 0/9

Subtract 49/42 from 27/9

1^st number: 3 0/9, 2^nd number: 1 7/42

27/9 - 49/42 is 11/6.

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,
27/9 = 27 × 14/9 × 14 = 378/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
49/42 = 49 × 3/42 × 3 = 147/126
Subtract the two like fractions:
378/126 - 147/126 = 378 - 147/126 = 231/126
After reducing the fraction, the answer is 11/6
In mixed form: 15/6

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