Add 42/40 and 40/3
1st number: 1 2/40, 2nd number: 13 1/3
42/40 + 40/3 is 863/60.
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,
42/40 = 42 × 3/40 × 3 = 126/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
40/3 = 40 × 40/3 × 40 = 1600/120 - Add the two like fractions:
126/120 + 1600/120 = 126 + 1600/120 = 1726/120 - 1726/120 simplified gives 863/60
- So, 42/40 + 40/3 = 863/60
In mixed form: 1423/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+40/3 42/40+80/3 42/80+40/3 42/40+40/6 42/40+40/9 42/40+40/15 42/40+40/21