Add 90/30 and 10/81
1st number: 3 0/30, 2nd number: 10/81
90/30 + 10/81 is 253/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
90/30 = 90 × 27/30 × 27 = 2430/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
10/81 = 10 × 10/81 × 10 = 100/810 - Add the two like fractions:
2430/810 + 100/810 = 2430 + 100/810 = 2530/810 - 2530/810 simplified gives 253/81
- So, 90/30 + 10/81 = 253/81
In mixed form: 310/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+20/81 90/60+10/81 90/30+30/81 90/30+50/81 90/30+70/81