Subtract 21/54 from 42/8, Solve 5 2/8

Subtract 21/54 from 42/8

1^st number: 5 2/8, 2^nd number: 21/54

42/8 - 21/54 is 175/36.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 54 is 216

Next, find the equivalent fraction of both fractional numbers with denominator 216
For the 1st fraction, since 8 × 27 = 216,
42/8 = 42 × 27/8 × 27 = 1134/216
Likewise, for the 2nd fraction, since 54 × 4 = 216,
21/54 = 21 × 4/54 × 4 = 84/216
Subtract the two like fractions:
1134/216 - 84/216 = 1134 - 84/216 = 1050/216
After reducing the fraction, the answer is 175/36
In mixed form: 431/36

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