Add 84/7 and 72/70
1st number: 12 0/7, 2nd number: 1 2/70
84/7 + 72/70 is 456/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
84/7 = 84 × 10/7 × 10 = 840/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
72/70 = 72 × 1/70 × 1 = 72/70 - Add the two like fractions:
840/70 + 72/70 = 840 + 72/70 = 912/70 - 912/70 simplified gives 456/35
- So, 84/7 + 72/70 = 456/35
In mixed form: 131/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14+72/70 84/21+72/70 84/35+72/70 84/49+72/70