Add 32/84 and 70/21
1st number: 32/84, 2nd number: 3 7/21
32/84 + 70/21 is 26/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
32/84 = 32 × 1/84 × 1 = 32/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
70/21 = 70 × 4/21 × 4 = 280/84 - Add the two like fractions:
32/84 + 280/84 = 32 + 280/84 = 312/84 - 312/84 simplified gives 26/7
- So, 32/84 + 70/21 = 26/7
In mixed form: 35/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/84+70/21 32/84+70/42 96/84+70/21 32/84+70/63