Add 9/4 and 20/70
1st number: 2 1/4, 2nd number: 20/70
9/4 + 20/70 is 71/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
9/4 = 9 × 35/4 × 35 = 315/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Add the two like fractions:
315/140 + 40/140 = 315 + 40/140 = 355/140 - 355/140 simplified gives 71/28
- So, 9/4 + 20/70 = 71/28
In mixed form: 215/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+20/70 9/4+40/70 9/8+20/70 27/4+20/70 9/4+60/70 9/12+20/70 45/4+20/70 9/20+20/70 63/4+20/70 9/28+20/70