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1. Someone thinks of a number y. He subtracts 3 from the number, then doubles it. What is the final result, in terms of y?

 

2. Solve for z. 

\( 1 + \dfrac1{1 + \dfrac1{1 + \dfrac1z}} = 5\)

 Feb 22, 2021
 #1
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1. Start with a number: y

Subtract 3: y - 3

Double it: 2(y-3)

 

2. Start from the inside and work outwards.

 

1 + (1/(1 + 1/((z+1)/z)))= 5

 

and so on. 

 Feb 22, 2021

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