Add 16/42 and 28/90
16/42 + 28/90 is 218/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
16/42 = 16 × 15/42 × 15 = 240/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Add the two like fractions:
240/630 + 196/630 = 240 + 196/630 = 436/630 - 436/630 simplified gives 218/315
- So, 16/42 + 28/90 = 218/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42+28/90 16/42+56/90 16/84+28/90 48/42+28/90 16/42+84/90 80/42+28/90