Add 12/8 and 45/15
1st number: 1 4/8, 2nd number: 3 0/15
12/8 + 45/15 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
12/8 = 12 × 15/8 × 15 = 180/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
45/15 = 45 × 8/15 × 8 = 360/120 - Add the two like fractions:
180/120 + 360/120 = 180 + 360/120 = 540/120 - 540/120 simplified gives 9/2
- So, 12/8 + 45/15 = 9/2
In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+45/15 12/8+90/15 12/16+45/15 12/8+45/30 36/8+45/15 12/24+45/15 60/8+45/15 12/40+45/15 12/8+45/75 84/8+45/15 12/56+45/15