Subtract 3/27 from 21/18, Solve 1 3/18

Subtract 3/27 from 21/18

1^st number: 1 3/18, 2^nd number: 3/27

21/18 - 3/27 is 19/18.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54

Next, find the equivalent fraction of both fractional numbers with denominator 54
For the 1st fraction, since 18 × 3 = 54,
21/18 = 21 × 3/18 × 3 = 63/54
Likewise, for the 2nd fraction, since 27 × 2 = 54,
3/27 = 3 × 2/27 × 2 = 6/54
Subtract the two like fractions:
63/54 - 6/54 = 63 - 6/54 = 57/54
After reducing the fraction, the answer is 19/18
In mixed form: 11/18

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