Add 42/45 and 20/14
1st number: 42/45, 2nd number: 1 6/14
42/45 + 20/14 is 248/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
42/45 = 42 × 14/45 × 14 = 588/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
20/14 = 20 × 45/14 × 45 = 900/630 - Add the two like fractions:
588/630 + 900/630 = 588 + 900/630 = 1488/630 - 1488/630 simplified gives 248/105
- So, 42/45 + 20/14 = 248/105
In mixed form: 238/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+20/14 42/45+40/14 42/90+20/14 42/45+20/28 42/45+60/14 42/45+20/42 42/45+20/70 42/45+20/98