Subtract 63/10 from 18/27, Solve 18/27

Subtract 63/10 from 18/27

1^st number: 18/27, 2^nd number: 6 3/10

18/27 - 63/10 is -169/30.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 10 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 27 × 10 = 270,
18/27 = 18 × 10/27 × 10 = 180/270
Likewise, for the 2nd fraction, since 10 × 27 = 270,
63/10 = 63 × 27/10 × 27 = 1701/270
Subtract the two like fractions:
180/270 - 1701/270 = 180 - 1701/270 = -1521/270
After reducing the fraction, the answer is -169/30

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