Add 15/2 and 12/40
1st number: 7 1/2, 2nd number: 12/40
15/2 + 12/40 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
15/2 = 15 × 20/2 × 20 = 300/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
12/40 = 12 × 1/40 × 1 = 12/40 - Add the two like fractions:
300/40 + 12/40 = 300 + 12/40 = 312/40 - 312/40 simplified gives 39/5
- So, 15/2 + 12/40 = 39/5
In mixed form: 74/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+12/40 15/2+24/40 15/4+12/40 15/2+12/80 45/2+12/40 15/2+36/40 15/6+12/40 75/2+12/40 15/2+60/40 15/10+12/40 15/2+84/40 15/14+12/40