4 more than twice a number is 680

The number (x) in: "4 more than twice a number is 680" 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 680.

To solve this, you first write the problem as an algebra equation as follows: 2x + 4 = 680

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 = 680

2x + 4 - 4 = 680 - 4
2x = 676

2x/2 = 676/2
x = 338

Answer = 338

The answer above is correct, because twice 338 is 676, and 4 more than 676 is in fact 680.

More Than Twice a number
Go here to solve a similar algebra problem.

4 more than twice a number is 681
Try to solve the next algebra problem on our list before you go here to check your answer.