Subtract 2/27 from 84/21, Solve 4 0/21

Subtract 2/27 from 84/21

1^st number: 4 0/21, 2^nd number: 2/27

84/21 - 2/27 is 106/27.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 21 × 9 = 189,
84/21 = 84 × 9/21 × 9 = 756/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
2/27 = 2 × 7/27 × 7 = 14/189
Subtract the two like fractions:
756/189 - 14/189 = 756 - 14/189 = 742/189
After reducing the fraction, the answer is 106/27
In mixed form: 325/27

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