Add 20/7 and 32/40
1st number: 2 6/7, 2nd number: 32/40
20/7 + 32/40 is 128/35.
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,
20/7 = 20 × 40/7 × 40 = 800/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
32/40 = 32 × 7/40 × 7 = 224/280 - Add the two like fractions:
800/280 + 224/280 = 800 + 224/280 = 1024/280 - 1024/280 simplified gives 128/35
- So, 20/7 + 32/40 = 128/35
In mixed form: 323/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7+32/40 20/7+64/40 20/14+32/40 20/7+32/80 60/7+32/40 20/7+96/40 20/21+32/40 20/35+32/40 20/49+32/40