9 more than twice a number is 815

The number (x) in: "9 more than twice a number is 815" is what we are solving here.

In other words, you are looking for a number (x) that if you multiply it by two (same as twice) and then add 9, you get 815.

To solve this, you first write the problem as an algebra equation as follows: 2x + 9 = 815

Then you solve the equation by subtracting 9 from both sides, and then divide both sides by 2. Here is the math to illustrate better:

2x + 9 = 815

2x + 9 - 9 = 815 - 9
2x = 806

2x/2 = 806/2
x = 403

Answer = 403

The answer above is correct, because twice 403 is 806, and 9 more than 806 is in fact 815.

More Than Twice a number
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9 more than twice a number is 816
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