Add 45/70 and 80/8
1st number: 45/70, 2nd number: 10 0/8
45/70 + 80/8 is 149/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
45/70 = 45 × 4/70 × 4 = 180/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
80/8 = 80 × 35/8 × 35 = 2800/280 - Add the two like fractions:
180/280 + 2800/280 = 180 + 2800/280 = 2980/280 - 2980/280 simplified gives 149/14
- So, 45/70 + 80/8 = 149/14
In mixed form: 109/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+80/8 45/70+80/16 45/70+80/24 45/70+80/40 45/70+80/56