Subtract 18/54 from 28/7, Solve 4 0/7

Subtract 18/54 from 28/7

1^st number: 4 0/7, 2^nd number: 18/54

28/7 - 18/54 is 11/3.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 7 × 54 = 378,
28/7 = 28 × 54/7 × 54 = 1512/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
18/54 = 18 × 7/54 × 7 = 126/378
Subtract the two like fractions:
1512/378 - 126/378 = 1512 - 126/378 = 1386/378
After reducing the fraction, the answer is 11/3
In mixed form: 32/3

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