Subtract 50/42 from 6/9, Solve 6/9 - 1 8/42 as a fraction

Subtract 50/42 from 6/9

1^st number: 6/9, 2^nd number: 1 8/42

6/9 - 50/42 is -11/21.

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,
6/9 = 6 × 14/9 × 14 = 84/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
50/42 = 50 × 3/42 × 3 = 150/126
Subtract the two like fractions:
84/126 - 150/126 = 84 - 150/126 = -66/126
After reducing the fraction, the answer is -11/21

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