Add 40/84 and 14/18
40/84 + 14/18 is 79/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
14/18 = 14 × 14/18 × 14 = 196/252 - Add the two like fractions:
120/252 + 196/252 = 120 + 196/252 = 316/252 - 316/252 simplified gives 79/63
- So, 40/84 + 14/18 = 79/63
In mixed form: 116/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84+14/18 40/84+28/18 40/84+14/36 40/84+42/18 40/84+14/54 40/84+70/18 40/84+14/90 40/84+98/18