Subtract 6/18 from 84/21, Solve 4 0/21

Subtract 6/18 from 84/21

1^st number: 4 0/21, 2^nd number: 6/18

84/21 - 6/18 is 11/3.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
84/21 = 84 × 6/21 × 6 = 504/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
6/18 = 6 × 7/18 × 7 = 42/126
Subtract the two like fractions:
504/126 - 42/126 = 504 - 42/126 = 462/126
After reducing the fraction, the answer is 11/3
In mixed form: 32/3

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