Subtract 5/10 from 21/7, Solve 3 0/7

Subtract 5/10 from 21/7

1^st number: 3 0/7, 2^nd number: 5/10

21/7 - 5/10 is 5/2.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70
Likewise, for the 2nd fraction, since 10 × 7 = 70,
5/10 = 5 × 7/10 × 7 = 35/70
Subtract the two like fractions:
210/70 - 35/70 = 210 - 35/70 = 175/70
After reducing the fraction, the answer is 5/2
In mixed form: 21/2

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