Add 70/30 and 4/81
1st number: 2 10/30, 2nd number: 4/81
70/30 + 4/81 is 193/81.
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,
70/30 = 70 × 27/30 × 27 = 1890/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
4/81 = 4 × 10/81 × 10 = 40/810 - Add the two like fractions:
1890/810 + 40/810 = 1890 + 40/810 = 1930/810 - 1930/810 simplified gives 193/81
- So, 70/30 + 4/81 = 193/81
In mixed form: 231/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+8/81 70/60+4/81 70/30+12/81 70/90+4/81 70/30+20/81 70/30+28/81