Add 7/90 and 30/8
1st number: 7/90, 2nd number: 3 6/8
7/90 + 30/8 is 689/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
7/90 = 7 × 4/90 × 4 = 28/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
30/8 = 30 × 45/8 × 45 = 1350/360 - Add the two like fractions:
28/360 + 1350/360 = 28 + 1350/360 = 1378/360 - 1378/360 simplified gives 689/180
- So, 7/90 + 30/8 = 689/180
In mixed form: 3149/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90+30/8 7/90+60/8 7/90+30/16 21/90+30/8 7/90+90/8 7/90+30/24 35/90+30/8 7/90+30/40 49/90+30/8 7/90+30/56