Subtract 45/25 from 8/12, Solve 8/12

Subtract 45/25 from 8/12

1^st number: 8/12, 2^nd number: 1 20/25

8/12 - 45/25 is -17/15.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 12 × 25 = 300,
8/12 = 8 × 25/12 × 25 = 200/300
Likewise, for the 2nd fraction, since 25 × 12 = 300,
45/25 = 45 × 12/25 × 12 = 540/300
Subtract the two like fractions:
200/300 - 540/300 = 200 - 540/300 = -340/300
After reducing the fraction, the answer is -17/15

MathStep (Works offline)

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