Add 20/72 and 14/70
20/72 + 14/70 is 43/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
20/72 = 20 × 35/72 × 35 = 700/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
14/70 = 14 × 36/70 × 36 = 504/2520 - Add the two like fractions:
700/2520 + 504/2520 = 700 + 504/2520 = 1204/2520 - 1204/2520 simplified gives 43/90
- So, 20/72 + 14/70 = 43/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+14/70 20/72+28/70 60/72+14/70 20/72+42/70 20/72+98/70