Add 25/2 and 15/84, Solve 12 1/2 + 15/84 as a fraction

Add 25/2 and 15/84

1^st number: 12 1/2, 2^nd number: 15/84

25/2 + 15/84 is 355/28.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 2 × 42 = 84,
25/2 = 25 × 42/2 × 42 = 1050/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84
Add the two like fractions:
1050/84 + 15/84 = 1050 + 15/84 = 1065/84
1065/84 simplified gives 355/28
So, 25/2 + 15/84 = 355/28
In mixed form: 1219/28

MathStep (Works offline)

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