Add 70/90 and 42/9
1st number: 70/90, 2nd number: 4 6/9
70/90 + 42/9 is 49/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
42/9 = 42 × 10/9 × 10 = 420/90 - Add the two like fractions:
70/90 + 420/90 = 70 + 420/90 = 490/90 - 490/90 simplified gives 49/9
- So, 70/90 + 42/9 = 49/9
In mixed form: 54/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+84/9 70/90+42/18 70/90+42/27 70/90+42/45 70/90+42/63