9 more than twice a number is 871

The number (x) in: "9 more than twice a number is 871" 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 9, you get 871.

To solve this, you first write the problem as an algebra equation as follows: 2x + 9 = 871

Then you solve the equation by subtracting 9 from both sides, and then divide both sides by 2. Here is the math to illustrate better:

2x + 9 = 871

2x + 9 - 9 = 871 - 9
2x = 862

2x/2 = 862/2
x = 431

Answer = 431

The answer above is correct, because twice 431 is 862, and 9 more than 862 is in fact 871.

More Than Twice a number
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9 more than twice a number is 872
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