Add 42/2 and 20/30
1st number: 21 0/2, 2nd number: 20/30
42/2 + 20/30 is 65/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
42/2 = 42 × 15/2 × 15 = 630/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
20/30 = 20 × 1/30 × 1 = 20/30 - Add the two like fractions:
630/30 + 20/30 = 630 + 20/30 = 650/30 - 650/30 simplified gives 65/3
- So, 42/2 + 20/30 = 65/3
In mixed form: 212/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2+20/30 42/2+40/30 42/4+20/30 42/2+20/60 42/2+60/30 42/6+20/30 42/2+20/90 42/10+20/30 42/14+20/30