Add 30/90 and 72/8
1st number: 30/90, 2nd number: 9 0/8
30/90 + 72/8 is 28/3.
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,
30/90 = 30 × 4/90 × 4 = 120/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
72/8 = 72 × 45/8 × 45 = 3240/360 - Add the two like fractions:
120/360 + 3240/360 = 120 + 3240/360 = 3360/360 - 3360/360 simplified gives 28/3
- So, 30/90 + 72/8 = 28/3
In mixed form: 91/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+72/8 30/90+72/16 30/90+72/24 30/90+72/40 30/90+72/56