Add 3/90 and 16/70
3/90 + 16/70 is 11/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
16/70 = 16 × 9/70 × 9 = 144/630 - Add the two like fractions:
21/630 + 144/630 = 21 + 144/630 = 165/630 - 165/630 simplified gives 11/42
- So, 3/90 + 16/70 = 11/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90+16/70 3/90+32/70 9/90+16/70 3/90+48/70 15/90+16/70 3/90+80/70 21/90+16/70