Add 32/4 and 21/42
1st number: 8 0/4, 2nd number: 21/42
32/4 + 21/42 is 17/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
32/4 = 32 × 21/4 × 21 = 672/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
21/42 = 21 × 2/42 × 2 = 42/84 - Add the two like fractions:
672/84 + 42/84 = 672 + 42/84 = 714/84 - 714/84 simplified gives 17/2
- So, 32/4 + 21/42 = 17/2
In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/4+21/42 32/8+21/42 32/4+21/84 96/4+21/42 32/4+63/42 32/12+21/42 32/20+21/42 32/28+21/42