Add 90/35 and 12/18
1st number: 2 20/35, 2nd number: 12/18
90/35 + 12/18 is 68/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
90/35 = 90 × 18/35 × 18 = 1620/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
12/18 = 12 × 35/18 × 35 = 420/630 - Add the two like fractions:
1620/630 + 420/630 = 1620 + 420/630 = 2040/630 - 2040/630 simplified gives 68/21
- So, 90/35 + 12/18 = 68/21
In mixed form: 35/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35+24/18 90/70+12/18 90/35+12/36 90/35+36/18 90/35+12/54 90/35+60/18 90/35+12/90 90/35+84/18