Subtract 3/10 from 56/21, Solve 2 14/21

Subtract 3/10 from 56/21

1^st number: 2 14/21, 2^nd number: 3/10

56/21 - 3/10 is 71/30.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
56/21 = 56 × 10/21 × 10 = 560/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
3/10 = 3 × 21/10 × 21 = 63/210
Subtract the two like fractions:
560/210 - 63/210 = 560 - 63/210 = 497/210
After reducing the fraction, the answer is 71/30
In mixed form: 211/30

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