Add 90/70 and 2/15
1st number: 1 20/70, 2nd number: 2/15
90/70 + 2/15 is 149/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
2/15 = 2 × 14/15 × 14 = 28/210 - Add the two like fractions:
270/210 + 28/210 = 270 + 28/210 = 298/210 - 298/210 simplified gives 149/105
- So, 90/70 + 2/15 = 149/105
In mixed form: 144/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+4/15 90/70+2/30 90/70+6/15 90/70+2/45 90/70+10/15 90/70+2/75 90/70+14/15