Add 20/70 and 70/8
1st number: 20/70, 2nd number: 8 6/8
20/70 + 70/8 is 253/28.
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,
20/70 = 20 × 4/70 × 4 = 80/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
70/8 = 70 × 35/8 × 35 = 2450/280 - Add the two like fractions:
80/280 + 2450/280 = 80 + 2450/280 = 2530/280 - 2530/280 simplified gives 253/28
- So, 20/70 + 70/8 = 253/28
In mixed form: 91/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+70/8 20/70+70/16 60/70+70/8 20/70+70/24 20/70+70/40 20/70+70/56