Add 20/70 and 60/84
20/70 + 60/84 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
20/70 = 20 × 6/70 × 6 = 120/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
60/84 = 60 × 5/84 × 5 = 300/420 - Add the two like fractions:
120/420 + 300/420 = 120 + 300/420 = 420/420 - 420/420 simplified gives 1/1
- So, 20/70 + 60/84 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+60/84 60/70+60/84