Add 12/2 and 90/70
1st number: 6 0/2, 2nd number: 1 20/70
12/2 + 90/70 is 51/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
12/2 = 12 × 35/2 × 35 = 420/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Add the two like fractions:
420/70 + 90/70 = 420 + 90/70 = 510/70 - 510/70 simplified gives 51/7
- So, 12/2 + 90/70 = 51/7
In mixed form: 72/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/2+90/70 12/4+90/70 36/2+90/70 12/6+90/70 60/2+90/70 12/10+90/70 84/2+90/70 12/14+90/70