Anumber is doubled and then 1 is added to it. the answer is divided by 5 and then increased by 16. the final result is 18. a)develop an equation that shows the step above equation: b) solve the equation to determine the value of the number. solve the equation. show your work the number

So let's break down this sentence (Let n = unknown number):

Now, let's solve our prior equation found in A. To solve for the unknown number, n, we need to isolate the variable onto 1 side of the equation. Firstly subtract both sides by 16 to cancel out the + 16 on the left side:

Next, multiply both sides by 5 to cancel out the division on the left side:

Next, subtract both sides by 1 to cancel out the + 1:

Lastly, divide both sides by 2 to cancel out the multiplication:

In short, the number is 9/2 or 4.5.

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