Add 18/40 and 50/84
18/40 + 50/84 is 439/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
18/40 = 18 × 21/40 × 21 = 378/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
50/84 = 50 × 10/84 × 10 = 500/840 - Add the two like fractions:
378/840 + 500/840 = 378 + 500/840 = 878/840 - 878/840 simplified gives 439/420
- So, 18/40 + 50/84 = 439/420
In mixed form: 119/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+50/84 18/80+50/84 54/40+50/84 90/40+50/84