Subtract 9/21 from 56/28, Solve 2 0/28

Subtract 9/21 from 56/28

1^st number: 2 0/28, 2^nd number: 9/21

56/28 - 9/21 is 11/7.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 28 × 3 = 84,
56/28 = 56 × 3/28 × 3 = 168/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
9/21 = 9 × 4/21 × 4 = 36/84
Subtract the two like fractions:
168/84 - 36/84 = 168 - 36/84 = 132/84
After reducing the fraction, the answer is 11/7
In mixed form: 14/7

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