Subtract 15/50 from 28/12, Solve 2 4/12

Subtract 15/50 from 28/12

1^st number: 2 4/12, 2^nd number: 15/50

28/12 - 15/50 is 61/30.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 50 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 12 × 25 = 300,
28/12 = 28 × 25/12 × 25 = 700/300
Likewise, for the 2nd fraction, since 50 × 6 = 300,
15/50 = 15 × 6/50 × 6 = 90/300
Subtract the two like fractions:
700/300 - 90/300 = 700 - 90/300 = 610/300
After reducing the fraction, the answer is 61/30
In mixed form: 21/30

MathStep (Works offline)

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