Add 18/84 and 40/16
1st number: 18/84, 2nd number: 2 8/16
18/84 + 40/16 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 84 × 4 = 336,
18/84 = 18 × 4/84 × 4 = 72/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
40/16 = 40 × 21/16 × 21 = 840/336 - Add the two like fractions:
72/336 + 840/336 = 72 + 840/336 = 912/336 - 912/336 simplified gives 19/7
- So, 18/84 + 40/16 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+40/16 18/84+80/16 18/84+40/32 54/84+40/16 18/84+40/48 90/84+40/16 18/84+40/80