Add 3/40 and 12/3
1st number: 3/40, 2nd number: 4 0/3
3/40 + 12/3 is 163/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
3/40 = 3 × 3/40 × 3 = 9/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
12/3 = 12 × 40/3 × 40 = 480/120 - Add the two like fractions:
9/120 + 480/120 = 9 + 480/120 = 489/120 - 489/120 simplified gives 163/40
- So, 3/40 + 12/3 = 163/40
In mixed form: 43/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+12/3 3/40+24/3 3/80+12/3 3/40+12/6 9/40+12/3 3/40+36/3 3/40+12/9 15/40+12/3 3/40+60/3 3/40+12/15 21/40+12/3 3/40+84/3 3/40+12/21