Add 3/12 and 25/40
3/12 + 25/40 is 7/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
3/12 = 3 × 10/12 × 10 = 30/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
25/40 = 25 × 3/40 × 3 = 75/120 - Add the two like fractions:
30/120 + 75/120 = 30 + 75/120 = 105/120 - 105/120 simplified gives 7/8
- So, 3/12 + 25/40 = 7/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+25/40 3/12+50/40 3/24+25/40 3/12+25/80 9/12+25/40 3/12+75/40 3/36+25/40 15/12+25/40 3/60+25/40 21/12+25/40 3/84+25/40