Add 90/45 and 60/12
1st number: 2 0/45, 2nd number: 5 0/12
90/45 + 60/12 is 7/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
90/45 = 90 × 4/45 × 4 = 360/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
60/12 = 60 × 15/12 × 15 = 900/180 - Add the two like fractions:
360/180 + 900/180 = 360 + 900/180 = 1260/180 - 1260/180 simplified gives 7/1
- So, 90/45 + 60/12 = 7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/45+60/24 90/45+60/36 90/45+60/84