Add 12/8 and 3/90
1st number: 1 4/8, 2nd number: 3/90
12/8 + 3/90 is 23/15.
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,
3/90 = 3 × 4/90 × 4 = 12/360 - Add the two like fractions:
540/360 + 12/360 = 540 + 12/360 = 552/360 - 552/360 simplified gives 23/15
- So, 12/8 + 3/90 = 23/15
In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+3/90 12/8+6/90 12/16+3/90 36/8+3/90 12/8+9/90 12/24+3/90 60/8+3/90 12/8+15/90 12/40+3/90 84/8+3/90 12/8+21/90 12/56+3/90