Add 90/7 and 45/70
1st number: 12 6/7, 2nd number: 45/70
90/7 + 45/70 is 27/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
90/7 = 90 × 10/7 × 10 = 900/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
45/70 = 45 × 1/70 × 1 = 45/70 - Add the two like fractions:
900/70 + 45/70 = 900 + 45/70 = 945/70 - 945/70 simplified gives 27/2
- So, 90/7 + 45/70 = 27/2
In mixed form: 131/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7+90/70 90/14+45/70 90/21+45/70 90/35+45/70 90/49+45/70