Question

problem 4
amor put a number into the machine, and 40 was the output.
what was the input?
image of a machine with steps: multiply by 3, subtract 2, output is 40

Explanation:

Step1: Reverse the operations

The machine first multiplies by 3, then subtracts 2 to get 40. To find the input, we reverse the operations: add 2 first, then divide by 3.

Step2: Add 2 to the output

$40 + 2 = 42$

Step3: Divide by 3

$\frac{42}{3} = 14$

Answer:

14