Subtract 10/20 from 90/14, Solve 6 6/14

Subtract 10/20 from 90/14

1^st number: 6 6/14, 2^nd number: 10/20

90/14 - 10/20 is 83/14.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 14 × 10 = 140,
90/14 = 90 × 10/14 × 10 = 900/140
Likewise, for the 2nd fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140
Subtract the two like fractions:
900/140 - 70/140 = 900 - 70/140 = 830/140
After reducing the fraction, the answer is 83/14
In mixed form: 513/14

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