Add 70/12 and 50/90
1st number: 5 10/12, 2nd number: 50/90
70/12 + 50/90 is 115/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
70/12 = 70 × 15/12 × 15 = 1050/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
50/90 = 50 × 2/90 × 2 = 100/180 - Add the two like fractions:
1050/180 + 100/180 = 1050 + 100/180 = 1150/180 - 1150/180 simplified gives 115/18
- So, 70/12 + 50/90 = 115/18
In mixed form: 67/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/24+50/90 70/36+50/90 70/60+50/90 70/84+50/90