Add 15/90 and 30/4
1st number: 15/90, 2nd number: 7 2/4
15/90 + 30/4 is 23/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
15/90 = 15 × 2/90 × 2 = 30/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
30/4 = 30 × 45/4 × 45 = 1350/180 - Add the two like fractions:
30/180 + 1350/180 = 30 + 1350/180 = 1380/180 - 1380/180 simplified gives 23/3
- So, 15/90 + 30/4 = 23/3
In mixed form: 72/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90+30/4 15/90+60/4 15/90+30/8 45/90+30/4 15/90+90/4 15/90+30/12 75/90+30/4 15/90+30/20 15/90+30/28