Add 42/40 and 30/5
1st number: 1 2/40, 2nd number: 6 0/5
42/40 + 30/5 is 141/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
42/40 = 42 × 1/40 × 1 = 42/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
30/5 = 30 × 8/5 × 8 = 240/40 - Add the two like fractions:
42/40 + 240/40 = 42 + 240/40 = 282/40 - 282/40 simplified gives 141/20
- So, 42/40 + 30/5 = 141/20
In mixed form: 71/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+30/5 42/40+60/5 42/80+30/5 42/40+30/10 42/40+90/5 42/40+30/15 42/40+30/25 42/40+30/35