9 more than twice a number is 811

The number (x) in: "9 more than twice a number is 811" 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 811.

To solve this, you first write the problem as an algebra equation as follows: 2x + 9 = 811

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 = 811

2x + 9 - 9 = 811 - 9
2x = 802

2x/2 = 802/2
x = 401

Answer = 401

The answer above is correct, because twice 401 is 802, and 9 more than 802 is in fact 811.

More Than Twice a number
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9 more than twice a number is 812
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