Subtract 10/54 from 30/7, Solve 4 2/7

Subtract 10/54 from 30/7

1^st number: 4 2/7, 2^nd number: 10/54

30/7 - 10/54 is 775/189.

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,
30/7 = 30 × 54/7 × 54 = 1620/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
10/54 = 10 × 7/54 × 7 = 70/378
Subtract the two like fractions:
1620/378 - 70/378 = 1620 - 70/378 = 1550/378
After reducing the fraction, the answer is 775/189
In mixed form: 419/189

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