Add 40/8 and 90/12
1st number: 5 0/8, 2nd number: 7 6/12
40/8 + 90/12 is 25/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
40/8 = 40 × 3/8 × 3 = 120/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
90/12 = 90 × 2/12 × 2 = 180/24 - Add the two like fractions:
120/24 + 180/24 = 120 + 180/24 = 300/24 - 300/24 simplified gives 25/2
- So, 40/8 + 90/12 = 25/2
In mixed form: 121/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8+90/12 40/16+90/12 40/8+90/24 40/24+90/12 40/8+90/36 40/8+90/60 40/56+90/12 40/8+90/84