The sum of a number and its reciprocal is 72
The phrase a number means an arbitrary variable, let's call it x
x
The reciprocal of the number is written as:
1/x
The sum of a number and its reciprocal means we add:
x + 1/x
The word is means an equation, so we set x + 1/x equal to 72
x + 1/x = 72
The phrase a number means an arbitrary variable, let's call it x
x
The reciprocal of the number is written as:
1/x
The sum of a number and its reciprocal means we add:
x + 1/x
The word is means an equation, so we set x + 1/x equal to 72
x + 1/x = 72