Subtract 90/27 from 5/15, Solve 5/15

Subtract 90/27 from 5/15

1^st number: 5/15, 2^nd number: 3 9/27

5/15 - 90/27 is -3/1.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 15 × 9 = 135,
5/15 = 5 × 9/15 × 9 = 45/135
Likewise, for the 2nd fraction, since 27 × 5 = 135,
90/27 = 90 × 5/27 × 5 = 450/135
Subtract the two like fractions:
45/135 - 450/135 = 45 - 450/135 = -405/135
After reducing the fraction, the answer is -3/1

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