Add 84/45 and 30/12
1st number: 1 39/45, 2nd number: 2 6/12
84/45 + 30/12 is 131/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
30/12 = 30 × 15/12 × 15 = 450/180 - Add the two like fractions:
336/180 + 450/180 = 336 + 450/180 = 786/180 - 786/180 simplified gives 131/30
- So, 84/45 + 30/12 = 131/30
In mixed form: 411/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+60/12 84/90+30/12 84/45+30/24 84/45+90/12 84/45+30/36 84/45+30/60 84/45+30/84