Add 16/42 and 28/40
16/42 + 28/40 is 227/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
16/42 = 16 × 20/42 × 20 = 320/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
28/40 = 28 × 21/40 × 21 = 588/840 - Add the two like fractions:
320/840 + 588/840 = 320 + 588/840 = 908/840 - 908/840 simplified gives 227/210
- So, 16/42 + 28/40 = 227/210
In mixed form: 117/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42+28/40 16/42+56/40 16/84+28/40 16/42+28/80 48/42+28/40 16/42+84/40 80/42+28/40