Subtract 42/81 from 12/3, Solve 4 0/3

Subtract 42/81 from 12/3

1^st number: 4 0/3, 2^nd number: 42/81

12/3 - 42/81 is 94/27.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81

Next, find the equivalent fraction of both fractional numbers with denominator 81
For the 1st fraction, since 3 × 27 = 81,
12/3 = 12 × 27/3 × 27 = 324/81
Likewise, for the 2nd fraction, since 81 × 1 = 81,
42/81 = 42 × 1/81 × 1 = 42/81
Subtract the two like fractions:
324/81 - 42/81 = 324 - 42/81 = 282/81
After reducing the fraction, the answer is 94/27
In mixed form: 313/27

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