Add 18/40 and 5/84
18/40 + 5/84 is 107/210.
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,
5/84 = 5 × 10/84 × 10 = 50/840 - Add the two like fractions:
378/840 + 50/840 = 378 + 50/840 = 428/840 - 428/840 simplified gives 107/210
- So, 18/40 + 5/84 = 107/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+5/84 18/40+10/84 18/80+5/84 54/40+5/84 18/40+15/84 90/40+5/84 18/40+25/84 18/40+35/84