Question

what should be added to get (1/2 + 1/3 + 1/5 ) to get 3 ?

Answer 1

$3 - ((1 \div 2) + (1 \div 3) + (1 \div 5))$
$3 - ((15 + 10 + 6) \div 30)$
$(90 - 31) \div 30$

Answer 2

Given :

$\sf Added \: to \: get \: ( \frac{1}{2} + \frac{1}{3} + \frac{1}{5} ) \: to \: get \: 3$

To find :

• What should be added ?

Solution :

Sum of two rational number = 3

$= ( \frac{1}{2} + \frac{1}{3} + \frac{1}{5} )$

$= \large \frac{15 + 10 - 6}{30} = \frac{19}{30}$

❍ The other number b= Sum - One of the numbers

$= 3 - \frac{19}{30} = \frac{90 - 19}{30} = \frac{17}{30}$