Subtract 30/84 from 54/14, Solve 3 12/14

Subtract 30/84 from 54/14

1^st number: 3 12/14, 2^nd number: 30/84

54/14 - 30/84 is 7/2.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 14 × 6 = 84,
54/14 = 54 × 6/14 × 6 = 324/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84
Subtract the two like fractions:
324/84 - 30/84 = 324 - 30/84 = 294/84
After reducing the fraction, the answer is 7/2
In mixed form: 31/2

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