Add 45/12 and 7/40
1st number: 3 9/12, 2nd number: 7/40
45/12 + 7/40 is 157/40.
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,
45/12 = 45 × 10/12 × 10 = 450/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Add the two like fractions:
450/120 + 21/120 = 450 + 21/120 = 471/120 - 471/120 simplified gives 157/40
- So, 45/12 + 7/40 = 157/40
In mixed form: 337/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+7/40 45/12+14/40 45/24+7/40 45/12+7/80 45/12+21/40 45/36+7/40 45/12+35/40 45/60+7/40 45/12+49/40 45/84+7/40