4 more than twice a number is 684

The number (x) in: "4 more than twice a number is 684" 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 684.

To solve this, you first write the problem as an algebra equation as follows: 2x + 4 = 684

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 = 684

2x + 4 - 4 = 684 - 4
2x = 680

2x/2 = 680/2
x = 340

Answer = 340

The answer above is correct, because twice 340 is 680, and 4 more than 680 is in fact 684.

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4 more than twice a number is 685
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