Add 42/4 and 30/20
1st number: 10 2/4, 2nd number: 1 10/20
42/4 + 30/20 is 12/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
42/4 = 42 × 5/4 × 5 = 210/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
30/20 = 30 × 1/20 × 1 = 30/20 - Add the two like fractions:
210/20 + 30/20 = 210 + 30/20 = 240/20 - 240/20 simplified gives 12/1
- So, 42/4 + 30/20 = 12/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4+30/20 42/4+60/20 42/8+30/20 42/4+30/40 42/4+90/20 42/12+30/20 42/4+30/60 42/20+30/20 42/28+30/20