Add 9/7 and 72/40
1st number: 1 2/7, 2nd number: 1 32/40
9/7 + 72/40 is 108/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
9/7 = 9 × 40/7 × 40 = 360/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
72/40 = 72 × 7/40 × 7 = 504/280 - Add the two like fractions:
360/280 + 504/280 = 360 + 504/280 = 864/280 - 864/280 simplified gives 108/35
- So, 9/7 + 72/40 = 108/35
In mixed form: 33/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+72/40 9/14+72/40 9/7+72/80 27/7+72/40 9/21+72/40 45/7+72/40 9/35+72/40 63/7+72/40 9/49+72/40