Answers

Add 81/72 and 2/70

1^st number: 1 9/72, 2^nd number: 2/70

81/72 + 2/70 is 323/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 70 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 72 × 35 = 2520,
   81/72 = 81 × 35/72 × 35 = 2835/2520
3. Likewise, for the 2nd fraction, since 70 × 36 = 2520,
   2/70 = 2 × 36/70 × 36 = 72/2520
4. Add the two like fractions:
   2835/2520 + 72/2520 = 2835 + 72/2520 = 2907/2520
5. 2907/2520 simplified gives 323/280
6. So, 81/72 + 2/70 = 323/280
   In mixed form: 143/280

MathStep (Works offline)

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

Related: ⁸¹/₇₂+⁴/₇₀ ⁸¹/₇₂+⁶/₇₀ ⁸¹/₇₂+¹⁰/₇₀ ⁸¹/₇₂+¹⁴/₇₀

Add Fractions Calculator