Subtract 10/9 from 90/42, Solve 2 6/42

Subtract 10/9 from 90/42

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

90/42 - 10/9 is 65/63.

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,
90/42 = 90 × 3/42 × 3 = 270/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
10/9 = 10 × 14/9 × 14 = 140/126
Subtract the two like fractions:
270/126 - 140/126 = 270 - 140/126 = 130/126
After reducing the fraction, the answer is 65/63
In mixed form: 12/63

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