Add 30/35 and 84/90
30/35 + 84/90 is 188/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
30/35 = 30 × 18/35 × 18 = 540/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630 - Add the two like fractions:
540/630 + 588/630 = 540 + 588/630 = 1128/630 - 1128/630 simplified gives 188/105
- So, 30/35 + 84/90 = 188/105
In mixed form: 183/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/35+84/90 30/70+84/90 90/35+84/90