Add 84/32 and 28/70
1st number: 2 20/32, 2nd number: 28/70
84/32 + 28/70 is 121/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 70 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 32 × 35 = 1120,
84/32 = 84 × 35/32 × 35 = 2940/1120 - Likewise, for the 2nd fraction, since 70 × 16 = 1120,
28/70 = 28 × 16/70 × 16 = 448/1120 - Add the two like fractions:
2940/1120 + 448/1120 = 2940 + 448/1120 = 3388/1120 - 3388/1120 simplified gives 121/40
- So, 84/32 + 28/70 = 121/40
In mixed form: 31/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/32+56/70 84/64+28/70 84/32+84/70 84/96+28/70