Subtract 49/21 from 30/2, Solve 15 0/2

Subtract 49/21 from 30/2

1^st number: 15 0/2, 2^nd number: 2 7/21

30/2 - 49/21 is 38/3.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 2 × 21 = 42,
30/2 = 30 × 21/2 × 21 = 630/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
49/21 = 49 × 2/21 × 2 = 98/42
Subtract the two like fractions:
630/42 - 98/42 = 630 - 98/42 = 532/42
After reducing the fraction, the answer is 38/3
In mixed form: 122/3

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