Add 20/70 and 70/4
1st number: 20/70, 2nd number: 17 2/4
20/70 + 70/4 is 249/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
70/4 = 70 × 35/4 × 35 = 2450/140 - Add the two like fractions:
40/140 + 2450/140 = 40 + 2450/140 = 2490/140 - 2490/140 simplified gives 249/14
- So, 20/70 + 70/4 = 249/14
In mixed form: 1711/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+70/4 20/70+70/8 60/70+70/4 20/70+70/12 20/70+70/20 20/70+70/28