Subtract 20/21 from 10/4, Solve 2 2/4

Subtract 20/21 from 10/4

1^st number: 2 2/4, 2^nd number: 20/21

10/4 - 20/21 is 65/42.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
10/4 = 10 × 21/4 × 21 = 210/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
20/21 = 20 × 4/21 × 4 = 80/84
Subtract the two like fractions:
210/84 - 80/84 = 210 - 80/84 = 130/84
After reducing the fraction, the answer is 65/42
In mixed form: 123/42

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