6 more than twice a number is 640

The number (x) in: "6 more than twice a number is 640" 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 6, you get 640.

To solve this, you first write the problem as an algebra equation as follows: 2x + 6 = 640

Then you solve the equation by subtracting 6 from both sides, and then divide both sides by 2. Here is the math to illustrate better:

2x + 6 = 640

2x + 6 - 6 = 640 - 6
2x = 634

2x/2 = 634/2
x = 317

Answer = 317

The answer above is correct, because twice 317 is 634, and 6 more than 634 is in fact 640.

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