Add 30/4 and 3/90
1st number: 7 2/4, 2nd number: 3/90
30/4 + 3/90 is 113/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
30/4 = 30 × 45/4 × 45 = 1350/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
3/90 = 3 × 2/90 × 2 = 6/180 - Add the two like fractions:
1350/180 + 6/180 = 1350 + 6/180 = 1356/180 - 1356/180 simplified gives 113/15
- So, 30/4 + 3/90 = 113/15
In mixed form: 78/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4+3/90 30/4+6/90 30/8+3/90 90/4+3/90 30/4+9/90 30/12+3/90 30/4+15/90 30/20+3/90 30/4+21/90 30/28+3/90