Add 18/40 and 84/45
1st number: 18/40, 2nd number: 1 39/45
18/40 + 84/45 is 139/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
84/45 = 84 × 8/45 × 8 = 672/360 - Add the two like fractions:
162/360 + 672/360 = 162 + 672/360 = 834/360 - 834/360 simplified gives 139/60
- So, 18/40 + 84/45 = 139/60
In mixed form: 219/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+84/45 18/80+84/45 18/40+84/90 54/40+84/45 90/40+84/45