4 more than twice a number is 420

The number (x) in: "4 more than twice a number is 420" 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 420.

To solve this, you first write the problem as an algebra equation as follows: 2x + 4 = 420

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 = 420

2x + 4 - 4 = 420 - 4
2x = 416

2x/2 = 416/2
x = 208

Answer = 208

The answer above is correct, because twice 208 is 416, and 4 more than 416 is in fact 420.

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

4 more than twice a number is 421
Try to solve the next algebra problem on our list before you go here to check your answer.