Add 20/8 and 40/84
1st number: 2 4/8, 2nd number: 40/84
20/8 + 40/84 is 125/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
20/8 = 20 × 21/8 × 21 = 420/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
40/84 = 40 × 2/84 × 2 = 80/168 - Add the two like fractions:
420/168 + 80/168 = 420 + 80/168 = 500/168 - 500/168 simplified gives 125/42
- So, 20/8 + 40/84 = 125/42
In mixed form: 241/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8+40/84 20/8+80/84 20/16+40/84 60/8+40/84 20/24+40/84 20/40+40/84 20/56+40/84