Subtract 27/14 from 20/30, Solve 20/30

Subtract 27/14 from 20/30

1^st number: 20/30, 2^nd number: 1 13/14

20/30 - 27/14 is -53/42.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 14 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210
Likewise, for the 2nd fraction, since 14 × 15 = 210,
27/14 = 27 × 15/14 × 15 = 405/210
Subtract the two like fractions:
140/210 - 405/210 = 140 - 405/210 = -265/210
After reducing the fraction, the answer is -53/42

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