Add 90/84 and 30/35
1st number: 1 6/84, 2nd number: 30/35
90/84 + 30/35 is 27/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
30/35 = 30 × 12/35 × 12 = 360/420 - Add the two like fractions:
450/420 + 360/420 = 450 + 360/420 = 810/420 - 810/420 simplified gives 27/14
- So, 90/84 + 30/35 = 27/14
In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+60/35 90/84+30/70 90/84+90/35