Subtract 1/30 from 84/28, Solve 3 0/28

Subtract 1/30 from 84/28

1^st number: 3 0/28, 2^nd number: 1/30

84/28 - 1/30 is 89/30.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 28 × 15 = 420,
84/28 = 84 × 15/28 × 15 = 1260/420
Likewise, for the 2nd fraction, since 30 × 14 = 420,
1/30 = 1 × 14/30 × 14 = 14/420
Subtract the two like fractions:
1260/420 - 14/420 = 1260 - 14/420 = 1246/420
After reducing the fraction, the answer is 89/30
In mixed form: 229/30

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