Subtract 30/84 from 72/18, Solve 4 0/18

Subtract 30/84 from 72/18

1^st number: 4 0/18, 2^nd number: 30/84

72/18 - 30/84 is 51/14.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 18 × 14 = 252,
72/18 = 72 × 14/18 × 14 = 1008/252
Likewise, for the 2nd fraction, since 84 × 3 = 252,
30/84 = 30 × 3/84 × 3 = 90/252
Subtract the two like fractions:
1008/252 - 90/252 = 1008 - 90/252 = 918/252
After reducing the fraction, the answer is 51/14
In mixed form: 39/14

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