Add 20/25 and 35/42
20/25 + 35/42 is 49/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
20/25 = 20 × 42/25 × 42 = 840/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
35/42 = 35 × 25/42 × 25 = 875/1050 - Add the two like fractions:
840/1050 + 875/1050 = 840 + 875/1050 = 1715/1050 - 1715/1050 simplified gives 49/30
- So, 20/25 + 35/42 = 49/30
In mixed form: 119/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25+35/42 20/25+70/42 20/50+35/42 20/25+35/84 60/25+35/42 20/75+35/42