Add 20/25 and 28/63
20/25 + 28/63 is 56/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 25 × 63 = 1575,
20/25 = 20 × 63/25 × 63 = 1260/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
28/63 = 28 × 25/63 × 25 = 700/1575 - Add the two like fractions:
1260/1575 + 700/1575 = 1260 + 700/1575 = 1960/1575 - 1960/1575 simplified gives 56/45
- So, 20/25 + 28/63 = 56/45
In mixed form: 111/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25+28/63 20/25+56/63 20/50+28/63 60/25+28/63 20/25+84/63 20/75+28/63