Subtract 5/12 from 84/21, Solve 4 0/21

Subtract 5/12 from 84/21

1^st number: 4 0/21, 2^nd number: 5/12

84/21 - 5/12 is 43/12.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
84/21 = 84 × 4/21 × 4 = 336/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
5/12 = 5 × 7/12 × 7 = 35/84
Subtract the two like fractions:
336/84 - 35/84 = 336 - 35/84 = 301/84
After reducing the fraction, the answer is 43/12
In mixed form: 37/12

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