Add 45/63 and 30/9
1st number: 45/63, 2nd number: 3 3/9
45/63 + 30/9 is 85/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
45/63 = 45 × 1/63 × 1 = 45/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63 - Add the two like fractions:
45/63 + 210/63 = 45 + 210/63 = 255/63 - 255/63 simplified gives 85/21
- So, 45/63 + 30/9 = 85/21
In mixed form: 41/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63+30/9 45/63+60/9 45/63+30/18 45/63+90/9 45/63+30/27 45/63+30/45 45/63+30/63