Add 12/8 and 9/90
1st number: 1 4/8, 2nd number: 9/90
12/8 + 9/90 is 8/5.
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,
12/8 = 12 × 45/8 × 45 = 540/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
9/90 = 9 × 4/90 × 4 = 36/360 - Add the two like fractions:
540/360 + 36/360 = 540 + 36/360 = 576/360 - 576/360 simplified gives 8/5
- So, 12/8 + 9/90 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+9/90 12/8+18/90 12/16+9/90 36/8+9/90 12/8+27/90 12/24+9/90 60/8+9/90 12/8+45/90 12/40+9/90 84/8+9/90 12/8+63/90 12/56+9/90