Subtract 63/21 from 35/2, Solve 17 1/2

Subtract 63/21 from 35/2

1^st number: 17 1/2, 2^nd number: 3 0/21

35/2 - 63/21 is 29/2.

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,
35/2 = 35 × 21/2 × 21 = 735/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
63/21 = 63 × 2/21 × 2 = 126/42
Subtract the two like fractions:
735/42 - 126/42 = 735 - 126/42 = 609/42
After reducing the fraction, the answer is 29/2
In mixed form: 141/2

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