Subtract 15/5 from 45/27, Solve 1 18/27

Subtract 15/5 from 45/27

1^st number: 1 18/27, 2^nd number: 3 0/5

45/27 - 15/5 is -4/3.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 5 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 27 × 5 = 135,
45/27 = 45 × 5/27 × 5 = 225/135
Likewise, for the 2nd fraction, since 5 × 27 = 135,
15/5 = 15 × 27/5 × 27 = 405/135
Subtract the two like fractions:
225/135 - 405/135 = 225 - 405/135 = -180/135
After reducing the fraction, the answer is -4/3

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