9 more than twice a number is 813

The number (x) in: "9 more than twice a number is 813" 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 813.

To solve this, you first write the problem as an algebra equation as follows: 2x + 9 = 813

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 = 813

2x + 9 - 9 = 813 - 9
2x = 804

2x/2 = 804/2
x = 402

Answer = 402

The answer above is correct, because twice 402 is 804, and 9 more than 804 is in fact 813.

More Than Twice a number
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9 more than twice a number is 814
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