Add 45/8 and 20/70
1st number: 5 5/8, 2nd number: 20/70
45/8 + 20/70 is 331/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
45/8 = 45 × 35/8 × 35 = 1575/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
20/70 = 20 × 4/70 × 4 = 80/280 - Add the two like fractions:
1575/280 + 80/280 = 1575 + 80/280 = 1655/280 - 1655/280 simplified gives 331/56
- So, 45/8 + 20/70 = 331/56
In mixed form: 551/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+20/70 45/8+40/70 45/16+20/70 45/8+60/70 45/24+20/70 45/40+20/70 45/56+20/70