Answer:
n = -7
Step-by-step explanation:
You do cancels and removal out by inverse operation to find the answer.
Step 1: Write out the equation.
n+16=9
Step 2: Subtract both sides by 16 to cancel out the positive 16.
n +<u>16 (-16)</u> = 9 -16
Step 3: After +16-16, 9-16, you shall not have any more operations like (+, -, *, or / )
n = -7
<em>*Note:</em>
<em> n = -7.</em>
<em>2n = -14.</em>