Add 30/4 and 20/40
1st number: 7 2/4, 2nd number: 20/40
30/4 + 20/40 is 8/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
30/4 = 30 × 10/4 × 10 = 300/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
20/40 = 20 × 1/40 × 1 = 20/40 - Add the two like fractions:
300/40 + 20/40 = 300 + 20/40 = 320/40 - 320/40 simplified gives 8/1
- So, 30/4 + 20/40 = 8/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4+20/40 30/8+20/40 30/4+20/80 90/4+20/40 30/4+60/40 30/12+20/40 30/20+20/40 30/28+20/40