Add 42/2 and 20/45
1st number: 21 0/2, 2nd number: 20/45
42/2 + 20/45 is 193/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
42/2 = 42 × 45/2 × 45 = 1890/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
20/45 = 20 × 2/45 × 2 = 40/90 - Add the two like fractions:
1890/90 + 40/90 = 1890 + 40/90 = 1930/90 - 1930/90 simplified gives 193/9
- So, 42/2 + 20/45 = 193/9
In mixed form: 214/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2+20/45 42/2+40/45 42/4+20/45 42/2+20/90 42/2+60/45 42/6+20/45 42/10+20/45 42/14+20/45