Subtract 21/35 from 27/2, Solve 13 1/2

Subtract 21/35 from 27/2

1^st number: 13 1/2, 2^nd number: 21/35

27/2 - 21/35 is 129/10.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 35 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 2 × 35 = 70,
27/2 = 27 × 35/2 × 35 = 945/70
Likewise, for the 2nd fraction, since 35 × 2 = 70,
21/35 = 21 × 2/35 × 2 = 42/70
Subtract the two like fractions:
945/70 - 42/70 = 945 - 42/70 = 903/70
After reducing the fraction, the answer is 129/10
In mixed form: 129/10

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