Subtract 50/54 from 90/42, Solve 2 6/42

Subtract 50/54 from 90/42

1^st number: 2 6/42, 2^nd number: 50/54

90/42 - 50/54 is 230/189.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 42 × 9 = 378,
90/42 = 90 × 9/42 × 9 = 810/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
50/54 = 50 × 7/54 × 7 = 350/378
Subtract the two like fractions:
810/378 - 350/378 = 810 - 350/378 = 460/378
After reducing the fraction, the answer is 230/189
In mixed form: 141/189

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