Add 28/63 and 45/30
1st number: 28/63, 2nd number: 1 15/30
28/63 + 45/30 is 35/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
28/63 = 28 × 10/63 × 10 = 280/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
45/30 = 45 × 21/30 × 21 = 945/630 - Add the two like fractions:
280/630 + 945/630 = 280 + 945/630 = 1225/630 - 1225/630 simplified gives 35/18
- So, 28/63 + 45/30 = 35/18
In mixed form: 117/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+45/30 28/63+90/30 28/63+45/60 84/63+45/30 28/63+45/90