Add 45/12 and 90/40
1st number: 3 9/12, 2nd number: 2 10/40
45/12 + 90/40 is 6/1.
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,
90/40 = 90 × 3/40 × 3 = 270/120 - Add the two like fractions:
450/120 + 270/120 = 450 + 270/120 = 720/120 - 720/120 simplified gives 6/1
- So, 45/12 + 90/40 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+90/40 45/24+90/40 45/12+90/80 45/36+90/40 45/60+90/40 45/84+90/40