Add 20/80 and 20/84
20/80 + 20/84 is 41/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
20/80 = 20 × 21/80 × 21 = 420/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
20/84 = 20 × 20/84 × 20 = 400/1680 - Add the two like fractions:
420/1680 + 400/1680 = 420 + 400/1680 = 820/1680 - 820/1680 simplified gives 41/84
- So, 20/80 + 20/84 = 41/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80+20/84 20/80+40/84 60/80+20/84 20/80+60/84