Add 12/90 and 70/5
1st number: 12/90, 2nd number: 14 0/5
12/90 + 70/5 is 212/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
12/90 = 12 × 1/90 × 1 = 12/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
70/5 = 70 × 18/5 × 18 = 1260/90 - Add the two like fractions:
12/90 + 1260/90 = 12 + 1260/90 = 1272/90 - 1272/90 simplified gives 212/15
- So, 12/90 + 70/5 = 212/15
In mixed form: 142/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90+70/5 12/90+70/10 36/90+70/5 12/90+70/15 60/90+70/5 12/90+70/25 84/90+70/5 12/90+70/35