Subtract 36/9 from 3/42, Solve 3/42

Subtract 36/9 from 3/42

1^st number: 3/42, 2^nd number: 4 0/9

3/42 - 36/9 is -55/14.

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

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
3/42 = 3 × 3/42 × 3 = 9/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
36/9 = 36 × 14/9 × 14 = 504/126
Subtract the two like fractions:
9/126 - 504/126 = 9 - 504/126 = -495/126
After reducing the fraction, the answer is -55/14

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