Add 18/40 and 10/84
18/40 + 10/84 is 239/420.
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,
10/84 = 10 × 10/84 × 10 = 100/840 - Add the two like fractions:
378/840 + 100/840 = 378 + 100/840 = 478/840 - 478/840 simplified gives 239/420
- So, 18/40 + 10/84 = 239/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+10/84 18/40+20/84 18/80+10/84 54/40+10/84 18/40+30/84 90/40+10/84 18/40+50/84 18/40+70/84