Add 90/12 and 50/45
1st number: 7 6/12, 2nd number: 1 5/45
90/12 + 50/45 is 155/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
90/12 = 90 × 15/12 × 15 = 1350/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
50/45 = 50 × 4/45 × 4 = 200/180 - Add the two like fractions:
1350/180 + 200/180 = 1350 + 200/180 = 1550/180 - 1550/180 simplified gives 155/18
- So, 90/12 + 50/45 = 155/18
In mixed form: 811/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24+50/45 90/12+50/90 90/36+50/45 90/60+50/45 90/84+50/45