Add 30/45 and 63/40
1st number: 30/45, 2nd number: 1 23/40
30/45 + 63/40 is 269/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
30/45 = 30 × 8/45 × 8 = 240/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
63/40 = 63 × 9/40 × 9 = 567/360 - Add the two like fractions:
240/360 + 567/360 = 240 + 567/360 = 807/360 - 807/360 simplified gives 269/120
- So, 30/45 + 63/40 = 269/120
In mixed form: 229/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45+63/40 30/90+63/40 30/45+63/80 90/45+63/40