Subtract 21/54 from 8/4, Solve 2 0/4

Subtract 21/54 from 8/4

1^st number: 2 0/4, 2^nd number: 21/54

8/4 - 21/54 is 29/18.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 54 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 4 × 27 = 108,
8/4 = 8 × 27/4 × 27 = 216/108
Likewise, for the 2nd fraction, since 54 × 2 = 108,
21/54 = 21 × 2/54 × 2 = 42/108
Subtract the two like fractions:
216/108 - 42/108 = 216 - 42/108 = 174/108
After reducing the fraction, the answer is 29/18
In mixed form: 111/18

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