Subtract 56/7 from 21/2, Solve 10 1/2

Subtract 56/7 from 21/2

1^st number: 10 1/2, 2^nd number: 8 0/7

21/2 - 56/7 is 5/2.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14

Next, find the equivalent fraction of both fractional numbers with denominator 14
For the 1st fraction, since 2 × 7 = 14,
21/2 = 21 × 7/2 × 7 = 147/14
Likewise, for the 2nd fraction, since 7 × 2 = 14,
56/7 = 56 × 2/7 × 2 = 112/14
Subtract the two like fractions:
147/14 - 112/14 = 147 - 112/14 = 35/14
After reducing the fraction, the answer is 5/2
In mixed form: 21/2

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