Add 28/16 and 20/70
1st number: 1 12/16, 2nd number: 20/70
28/16 + 20/70 is 57/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 16 × 35 = 560,
28/16 = 28 × 35/16 × 35 = 980/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
20/70 = 20 × 8/70 × 8 = 160/560 - Add the two like fractions:
980/560 + 160/560 = 980 + 160/560 = 1140/560 - 1140/560 simplified gives 57/28
- So, 28/16 + 20/70 = 57/28
In mixed form: 21/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16+20/70 28/16+40/70 28/32+20/70 84/16+20/70 28/16+60/70 28/48+20/70 28/80+20/70