Subtract 30/28 from 72/18, Solve 4 0/18

Subtract 30/28 from 72/18

1^st number: 4 0/18, 2^nd number: 1 2/28

72/18 - 30/28 is 41/14.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 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 28 × 9 = 252,
30/28 = 30 × 9/28 × 9 = 270/252
Subtract the two like fractions:
1008/252 - 270/252 = 1008 - 270/252 = 738/252
After reducing the fraction, the answer is 41/14
In mixed form: 213/14

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