Add 84/45 and 40/30
1st number: 1 39/45, 2nd number: 1 10/30
84/45 + 40/30 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 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 30 × 3 = 90,
40/30 = 40 × 3/30 × 3 = 120/90 - Add the two like fractions:
168/90 + 120/90 = 168 + 120/90 = 288/90 - 288/90 simplified gives 16/5
- So, 84/45 + 40/30 = 16/5
In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+80/30 84/90+40/30 84/45+40/60 84/45+40/90