Add 84/7 and 90/70
1st number: 12 0/7, 2nd number: 1 20/70
84/7 + 90/70 is 93/7.
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,
90/70 = 90 × 1/70 × 1 = 90/70 - Add the two like fractions:
840/70 + 90/70 = 840 + 90/70 = 930/70 - 930/70 simplified gives 93/7
- So, 84/7 + 90/70 = 93/7
In mixed form: 132/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14+90/70 84/21+90/70 84/35+90/70 84/49+90/70