Subtract 8/9 from 49/42, Solve 1 7/42

Subtract 8/9 from 49/42

1^st number: 1 7/42, 2^nd number: 8/9

49/42 - 8/9 is 5/18.

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,
49/42 = 49 × 3/42 × 3 = 147/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
8/9 = 8 × 14/9 × 14 = 112/126
Subtract the two like fractions:
147/126 - 112/126 = 147 - 112/126 = 35/126
After reducing the fraction, the answer is 5/18

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