Add 54/40 and 30/15
1st number: 1 14/40, 2nd number: 2 0/15
54/40 + 30/15 is 67/20.
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,
54/40 = 54 × 3/40 × 3 = 162/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
30/15 = 30 × 8/15 × 8 = 240/120 - Add the two like fractions:
162/120 + 240/120 = 162 + 240/120 = 402/120 - 402/120 simplified gives 67/20
- So, 54/40 + 30/15 = 67/20
In mixed form: 37/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+60/15 54/80+30/15 54/40+90/15 54/40+30/45 54/40+30/75