Add 12/5 and 90/8
1st number: 2 2/5, 2nd number: 11 2/8
12/5 + 90/8 is 273/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
12/5 = 12 × 8/5 × 8 = 96/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
90/8 = 90 × 5/8 × 5 = 450/40 - Add the two like fractions:
96/40 + 450/40 = 96 + 450/40 = 546/40 - 546/40 simplified gives 273/20
- So, 12/5 + 90/8 = 273/20
In mixed form: 1313/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/5+90/8 12/10+90/8 12/5+90/16 36/5+90/8 12/15+90/8 12/5+90/24 60/5+90/8 12/25+90/8 12/5+90/40 84/5+90/8 12/35+90/8 12/5+90/56