Add 84/40 and 72/7
1st number: 2 4/40, 2nd number: 10 2/7
84/40 + 72/7 is 867/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
84/40 = 84 × 7/40 × 7 = 588/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
72/7 = 72 × 40/7 × 40 = 2880/280 - Add the two like fractions:
588/280 + 2880/280 = 588 + 2880/280 = 3468/280 - 3468/280 simplified gives 867/70
- So, 84/40 + 72/7 = 867/70
In mixed form: 1227/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+72/7 84/40+72/14 84/40+72/21 84/40+72/35 84/40+72/49