Add 20/42 and 45/32
1st number: 20/42, 2nd number: 1 13/32
20/42 + 45/32 is 1265/672.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 42 × 16 = 672,
20/42 = 20 × 16/42 × 16 = 320/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
45/32 = 45 × 21/32 × 21 = 945/672 - Add the two like fractions:
320/672 + 945/672 = 320 + 945/672 = 1265/672 - So, 20/42 + 45/32 = 1265/672
In mixed form: 1593/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+45/32 20/42+90/32 20/84+45/32 20/42+45/64 60/42+45/32 20/42+45/96