Add 21/70 and 6/16
21/70 + 6/16 is 27/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
21/70 = 21 × 8/70 × 8 = 168/560 - Likewise, for the 2nd fraction, since 16 × 35 = 560,
6/16 = 6 × 35/16 × 35 = 210/560 - Add the two like fractions:
168/560 + 210/560 = 168 + 210/560 = 378/560 - 378/560 simplified gives 27/40
- So, 21/70 + 6/16 = 27/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+6/16 21/70+12/16 21/70+6/32 63/70+6/16 21/70+18/16 21/70+6/48 21/70+30/16 21/70+6/80 21/70+42/16