Subtract 3/36 from 42/2, Solve 21 0/2

Subtract 3/36 from 42/2

1^st number: 21 0/2, 2^nd number: 3/36

42/2 - 3/36 is 251/12.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 36 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 2 × 18 = 36,
42/2 = 42 × 18/2 × 18 = 756/36
Likewise, for the 2nd fraction, since 36 × 1 = 36,
3/36 = 3 × 1/36 × 1 = 3/36
Subtract the two like fractions:
756/36 - 3/36 = 756 - 3/36 = 753/36
After reducing the fraction, the answer is 251/12
In mixed form: 2011/12

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