Add 84/45 and 1/90
1st number: 1 39/45, 2nd number: 1/90
84/45 + 1/90 is 169/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
84/45 = 84 × 2/45 × 2 = 168/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Add the two like fractions:
168/90 + 1/90 = 168 + 1/90 = 169/90 - So, 84/45 + 1/90 = 169/90
In mixed form: 179/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+2/90 84/90+1/90 84/45+3/90 84/45+5/90 84/45+7/90