Add 32/81 and 90/20
1st number: 32/81, 2nd number: 4 10/20
32/81 + 90/20 is 793/162.
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,
90/20 = 90 × 81/20 × 81 = 7290/1620 - Add the two like fractions:
640/1620 + 7290/1620 = 640 + 7290/1620 = 7930/1620 - 7930/1620 simplified gives 793/162
- So, 32/81 + 90/20 = 793/162
In mixed form: 4145/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/81+90/20 32/81+90/40 96/81+90/20 32/81+90/60