Subtract 21/45 from 45/27, Solve 1 18/27

Subtract 21/45 from 45/27

1^st number: 1 18/27, 2^nd number: 21/45

45/27 - 21/45 is 6/5.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 45 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 45 × 3 = 135,
21/45 = 21 × 3/45 × 3 = 63/135
Subtract the two like fractions:
225/135 - 63/135 = 225 - 63/135 = 162/135
After reducing the fraction, the answer is 6/5
In mixed form: 11/5

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