Subtract 20/45 from 27/14, Solve 1 13/14

Subtract 20/45 from 27/14

1^st number: 1 13/14, 2^nd number: 20/45

27/14 - 20/45 is 187/126.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 45 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
27/14 = 27 × 45/14 × 45 = 1215/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
20/45 = 20 × 14/45 × 14 = 280/630
Subtract the two like fractions:
1215/630 - 280/630 = 1215 - 280/630 = 935/630
After reducing the fraction, the answer is 187/126
In mixed form: 161/126

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