## Answer

## Step by step solution

Problem

The derivative of a sum of two functions is the sum of the derivatives of each function

The derivative of a function multiplied by a constant is equal to the constant times the derivative of the function

Applying the derivative of the exponential function

Applying the derivative of the exponential function

The derivative of a function multiplied by a constant is equal to the constant times the derivative of the function

The derivative of the linear function is equal to $1$

Multiply $-1$ times $-1$

Any expression multiplied by $1$ is equal to itself