Subtract 3/21 from 42/3, Solve 14 0/3

Subtract 3/21 from 42/3

1^st number: 14 0/3, 2^nd number: 3/21

42/3 - 3/21 is 97/7.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21

Next, find the equivalent fraction of both fractional numbers with denominator 21
For the 1st fraction, since 3 × 7 = 21,
42/3 = 42 × 7/3 × 7 = 294/21
Likewise, for the 2nd fraction, since 21 × 1 = 21,
3/21 = 3 × 1/21 × 1 = 3/21
Subtract the two like fractions:
294/21 - 3/21 = 294 - 3/21 = 291/21
After reducing the fraction, the answer is 97/7
In mixed form: 136/7

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