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

Subtract 56/21 from 3/10

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

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

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

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

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