Subtract 72/5 from 30/54, Solve 30/54

Subtract 72/5 from 30/54

1^st number: 30/54, 2^nd number: 14 2/5

30/54 - 72/5 is -623/45.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 5 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 54 × 5 = 270,
30/54 = 30 × 5/54 × 5 = 150/270
Likewise, for the 2nd fraction, since 5 × 54 = 270,
72/5 = 72 × 54/5 × 54 = 3888/270
Subtract the two like fractions:
150/270 - 3888/270 = 150 - 3888/270 = -3738/270
After reducing the fraction, the answer is -623/45

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