Subtract 90/54 from 4/15, Solve 4/15

Subtract 90/54 from 4/15

1^st number: 4/15, 2^nd number: 1 36/54

4/15 - 90/54 is -7/5.

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,
90/54 = 90 × 5/54 × 5 = 450/270
Subtract the two like fractions:
72/270 - 450/270 = 72 - 450/270 = -378/270
After reducing the fraction, the answer is -7/5

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