Add 30/8 and 75/90
1st number: 3 6/8, 2nd number: 75/90
30/8 + 75/90 is 55/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
30/8 = 30 × 45/8 × 45 = 1350/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
75/90 = 75 × 4/90 × 4 = 300/360 - Add the two like fractions:
1350/360 + 300/360 = 1350 + 300/360 = 1650/360 - 1650/360 simplified gives 55/12
- So, 30/8 + 75/90 = 55/12
In mixed form: 47/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8+75/90 30/16+75/90 90/8+75/90 30/24+75/90 30/40+75/90 30/56+75/90