Subtract 20/12 from 75/6, Solve 12 3/6

Subtract 20/12 from 75/6

1^st number: 12 3/6, 2^nd number: 1 8/12

75/6 - 20/12 is 65/6.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12

Next, find the equivalent fraction of both fractional numbers with denominator 12
For the 1st fraction, since 6 × 2 = 12,
75/6 = 75 × 2/6 × 2 = 150/12
Likewise, for the 2nd fraction, since 12 × 1 = 12,
20/12 = 20 × 1/12 × 1 = 20/12
Subtract the two like fractions:
150/12 - 20/12 = 150 - 20/12 = 130/12
After reducing the fraction, the answer is 65/6
In mixed form: 105/6

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad