Subtract 9/21 from 56/20, Solve 2 16/20

Subtract 9/21 from 56/20

1^st number: 2 16/20, 2^nd number: 9/21

56/20 - 9/21 is 83/35.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
56/20 = 56 × 21/20 × 21 = 1176/420
Likewise, for the 2nd fraction, since 21 × 20 = 420,
9/21 = 9 × 20/21 × 20 = 180/420
Subtract the two like fractions:
1176/420 - 180/420 = 1176 - 180/420 = 996/420
After reducing the fraction, the answer is 83/35
In mixed form: 213/35

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