Add 84/40 and 72/32
1st number: 2 4/40, 2nd number: 2 8/32
84/40 + 72/32 is 87/20.
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,
84/40 = 84 × 4/40 × 4 = 336/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
72/32 = 72 × 5/32 × 5 = 360/160 - Add the two like fractions:
336/160 + 360/160 = 336 + 360/160 = 696/160 - 696/160 simplified gives 87/20
- So, 84/40 + 72/32 = 87/20
In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+72/32 84/40+72/64 84/40+72/96