Subtract 30/28 from 21/2, Solve 10 1/2

Subtract 30/28 from 21/2

1^st number: 10 1/2, 2^nd number: 1 2/28

21/2 - 30/28 is 66/7.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 28 is 28

Next, find the equivalent fraction of both fractional numbers with denominator 28
For the 1st fraction, since 2 × 14 = 28,
21/2 = 21 × 14/2 × 14 = 294/28
Likewise, for the 2nd fraction, since 28 × 1 = 28,
30/28 = 30 × 1/28 × 1 = 30/28
Subtract the two like fractions:
294/28 - 30/28 = 294 - 30/28 = 264/28
After reducing the fraction, the answer is 66/7
In mixed form: 93/7

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