Subtract 21/54 from 42/4, Solve 10 2/4

Subtract 21/54 from 42/4

1^st number: 10 2/4, 2^nd number: 21/54

42/4 - 21/54 is 91/9.

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,
42/4 = 42 × 27/4 × 27 = 1134/108
Likewise, for the 2nd fraction, since 54 × 2 = 108,
21/54 = 21 × 2/54 × 2 = 42/108
Subtract the two like fractions:
1134/108 - 42/108 = 1134 - 42/108 = 1092/108
After reducing the fraction, the answer is 91/9
In mixed form: 101/9

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