Add 30/90 and 16/7
1st number: 30/90, 2nd number: 2 2/7
30/90 + 16/7 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
30/90 = 30 × 7/90 × 7 = 210/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
16/7 = 16 × 90/7 × 90 = 1440/630 - Add the two like fractions:
210/630 + 1440/630 = 210 + 1440/630 = 1650/630 - 1650/630 simplified gives 55/21
- So, 30/90 + 16/7 = 55/21
In mixed form: 213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+16/7 30/90+32/7 30/90+16/14 30/90+48/7 30/90+16/21 30/90+80/7 30/90+16/35 30/90+16/49