Add 84/36 and 30/70
1st number: 2 12/36, 2nd number: 30/70
84/36 + 30/70 is 58/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
84/36 = 84 × 35/36 × 35 = 2940/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
30/70 = 30 × 18/70 × 18 = 540/1260 - Add the two like fractions:
2940/1260 + 540/1260 = 2940 + 540/1260 = 3480/1260 - 3480/1260 simplified gives 58/21
- So, 84/36 + 30/70 = 58/21
In mixed form: 216/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/36+60/70 84/72+30/70 84/36+90/70