Add 90/40 and 72/8
1st number: 2 10/40, 2nd number: 9 0/8
90/40 + 72/8 is 45/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
90/40 = 90 × 1/40 × 1 = 90/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
72/8 = 72 × 5/8 × 5 = 360/40 - Add the two like fractions:
90/40 + 360/40 = 90 + 360/40 = 450/40 - 450/40 simplified gives 45/4
- So, 90/40 + 72/8 = 45/4
In mixed form: 111/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+72/8 90/40+72/16 90/40+72/24 90/40+72/40 90/40+72/56