Add 84/12 and 9/70
1st number: 7 0/12, 2nd number: 9/70
84/12 + 9/70 is 499/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
84/12 = 84 × 35/12 × 35 = 2940/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
9/70 = 9 × 6/70 × 6 = 54/420 - Add the two like fractions:
2940/420 + 54/420 = 2940 + 54/420 = 2994/420 - 2994/420 simplified gives 499/70
- So, 84/12 + 9/70 = 499/70
In mixed form: 79/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+18/70 84/24+9/70 84/12+27/70 84/36+9/70 84/12+45/70 84/60+9/70 84/12+63/70