Add 63/40 and 30/15
1st number: 1 23/40, 2nd number: 2 0/15
63/40 + 30/15 is 143/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
63/40 = 63 × 3/40 × 3 = 189/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
30/15 = 30 × 8/15 × 8 = 240/120 - Add the two like fractions:
189/120 + 240/120 = 189 + 240/120 = 429/120 - 429/120 simplified gives 143/40
- So, 63/40 + 30/15 = 143/40
In mixed form: 323/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/40+60/15 63/80+30/15 63/40+90/15 63/40+30/45 63/40+30/75