9 more than twice a number is 830

The number (x) in: "9 more than twice a number is 830" 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 830.

To solve this, you first write the problem as an algebra equation as follows: 2x + 9 = 830

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 = 830

2x + 9 - 9 = 830 - 9
2x = 821

2x/2 = 821/2
x = 410.5

Answer = 410.5

The answer above is correct, because twice 410.5 is 821, and 9 more than 821 is in fact 830.

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9 more than twice a number is 831
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