Add 30/63 and 45/56
30/63 + 45/56 is 215/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
30/63 = 30 × 8/63 × 8 = 240/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
45/56 = 45 × 9/56 × 9 = 405/504 - Add the two like fractions:
240/504 + 405/504 = 240 + 405/504 = 645/504 - 645/504 simplified gives 215/168
- So, 30/63 + 45/56 = 215/168
In mixed form: 147/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63+45/56 30/63+90/56 90/63+45/56