Add 32/81 and 7/20
32/81 + 7/20 is 1207/1620.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
32/81 = 32 × 20/81 × 20 = 640/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
7/20 = 7 × 81/20 × 81 = 567/1620 - Add the two like fractions:
640/1620 + 567/1620 = 640 + 567/1620 = 1207/1620 - So, 32/81 + 7/20 = 1207/1620
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/81+7/20 32/81+14/20 32/81+7/40 96/81+7/20 32/81+21/20 32/81+7/60 32/81+35/20 32/81+49/20