Add 25/21 and 20/32
1st number: 1 4/21, 2nd number: 20/32
25/21 + 20/32 is 305/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
25/21 = 25 × 32/21 × 32 = 800/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
20/32 = 20 × 21/32 × 21 = 420/672 - Add the two like fractions:
800/672 + 420/672 = 800 + 420/672 = 1220/672 - 1220/672 simplified gives 305/168
- So, 25/21 + 20/32 = 305/168
In mixed form: 1137/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+20/32 25/21+40/32 25/42+20/32 25/21+20/64 75/21+20/32 25/21+60/32 25/63+20/32 25/21+20/96