Add 45/18 and 10/40
1st number: 2 9/18, 2nd number: 10/40
45/18 + 10/40 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
45/18 = 45 × 20/18 × 20 = 900/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
10/40 = 10 × 9/40 × 9 = 90/360 - Add the two like fractions:
900/360 + 90/360 = 900 + 90/360 = 990/360 - 990/360 simplified gives 11/4
- So, 45/18 + 10/40 = 11/4
In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+10/40 45/18+20/40 45/36+10/40 45/18+10/80 45/18+30/40 45/54+10/40 45/18+50/40 45/90+10/40 45/18+70/40