Subtract 75/90 from 20/14, Solve 1 6/14

Subtract 75/90 from 20/14

1^st number: 1 6/14, 2^nd number: 75/90

20/14 - 75/90 is 25/42.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
20/14 = 20 × 45/14 × 45 = 900/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
75/90 = 75 × 7/90 × 7 = 525/630
Subtract the two like fractions:
900/630 - 525/630 = 900 - 525/630 = 375/630
After reducing the fraction, the answer is 25/42

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