Add 18/35 and 20/72
18/35 + 20/72 is 499/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 35 × 72 = 2520,
18/35 = 18 × 72/35 × 72 = 1296/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
20/72 = 20 × 35/72 × 35 = 700/2520 - Add the two like fractions:
1296/2520 + 700/2520 = 1296 + 700/2520 = 1996/2520 - 1996/2520 simplified gives 499/630
- So, 18/35 + 20/72 = 499/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/35+20/72 18/35+40/72 18/70+20/72 54/35+20/72 18/35+60/72 90/35+20/72