4 more than twice a number is 689

The number (x) in: "4 more than twice a number is 689" 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 4, you get 689.

To solve this, you first write the problem as an algebra equation as follows: 2x + 4 = 689

Then you solve the equation by subtracting 4 from both sides, and then divide both sides by 2. Here is the math to illustrate better:

2x + 4 = 689

2x + 4 - 4 = 689 - 4
2x = 685

2x/2 = 685/2
x = 342.5

Answer = 342.5

The answer above is correct, because twice 342.5 is 685, and 4 more than 685 is in fact 689.

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4 more than twice a number is 690
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