Answers

Add 1/81 and 60/72

1/81 + 60/72 is 137/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 72 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 81 × 8 = 648,
   1/81 = 1 × 8/81 × 8 = 8/648
3. Likewise, for the 2nd fraction, since 72 × 9 = 648,
   60/72 = 60 × 9/72 × 9 = 540/648
4. Add the two like fractions:
   8/648 + 540/648 = 8 + 540/648 = 548/648
5. 548/648 simplified gives 137/162
6. So, 1/81 + 60/72 = 137/162

MathStep (Works offline)

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

Related: ²/₈₁+⁶⁰/₇₂ ³/₈₁+⁶⁰/₇₂ ⁵/₈₁+⁶⁰/₇₂ ⁷/₈₁+⁶⁰/₇₂

Add Fractions Calculator