Subtract 30/54 from 4/15, Solve 4/15

Subtract 30/54 from 4/15

4/15 - 30/54 is -13/45.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 15 × 18 = 270,
4/15 = 4 × 18/15 × 18 = 72/270
Likewise, for the 2nd fraction, since 54 × 5 = 270,
30/54 = 30 × 5/54 × 5 = 150/270
Subtract the two like fractions:
72/270 - 150/270 = 72 - 150/270 = -78/270
After reducing the fraction, the answer is -13/45

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