Answers

Add 81/96 and 42/70

81/96 + 42/70 is 231/160.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 96 and 70 is 3360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3360
2. For the 1st fraction, since 96 × 35 = 3360,
   81/96 = 81 × 35/96 × 35 = 2835/3360
3. Likewise, for the 2nd fraction, since 70 × 48 = 3360,
   42/70 = 42 × 48/70 × 48 = 2016/3360
4. Add the two like fractions:
   2835/3360 + 2016/3360 = 2835 + 2016/3360 = 4851/3360
5. 4851/3360 simplified gives 231/160
6. So, 81/96 + 42/70 = 231/160
   In mixed form: 171/160

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁸¹/₉₆+⁸⁴/₇₀

Add Fractions Calculator