Add 90/12 and 30/35
1st number: 7 6/12, 2nd number: 30/35
90/12 + 30/35 is 117/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
90/12 = 90 × 35/12 × 35 = 3150/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
30/35 = 30 × 12/35 × 12 = 360/420 - Add the two like fractions:
3150/420 + 360/420 = 3150 + 360/420 = 3510/420 - 3510/420 simplified gives 117/14
- So, 90/12 + 30/35 = 117/14
In mixed form: 85/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+60/35 90/24+30/35 90/12+30/70 90/12+90/35 90/36+30/35 90/60+30/35 90/84+30/35