Subtract 21/18 from 40/3, Solve 13 1/3

Subtract 21/18 from 40/3

1^st number: 13 1/3, 2^nd number: 1 3/18

40/3 - 21/18 is 73/6.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 18 is 18

Next, find the equivalent fraction of both fractional numbers with denominator 18
For the 1st fraction, since 3 × 6 = 18,
40/3 = 40 × 6/3 × 6 = 240/18
Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18
Subtract the two like fractions:
240/18 - 21/18 = 240 - 21/18 = 219/18
After reducing the fraction, the answer is 73/6
In mixed form: 121/6

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