Add 84/15 and 90/45
1st number: 5 9/15, 2nd number: 2 0/45
84/15 + 90/45 is 38/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
84/15 = 84 × 3/15 × 3 = 252/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
90/45 = 90 × 1/45 × 1 = 90/45 - Add the two like fractions:
252/45 + 90/45 = 252 + 90/45 = 342/45 - 342/45 simplified gives 38/5
- So, 84/15 + 90/45 = 38/5
In mixed form: 73/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+90/45 84/45+90/45 84/75+90/45