Add 90/40 and 84/32
1st number: 2 10/40, 2nd number: 2 20/32
90/40 + 84/32 is 39/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 40 × 4 = 160,
90/40 = 90 × 4/40 × 4 = 360/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
84/32 = 84 × 5/32 × 5 = 420/160 - Add the two like fractions:
360/160 + 420/160 = 360 + 420/160 = 780/160 - 780/160 simplified gives 39/8
- So, 90/40 + 84/32 = 39/8
In mixed form: 47/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+84/32 90/40+84/64 90/40+84/96