
The number (x) in: "5 more than twice a number is 839" 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 5, you get 839.
To solve this, you first write the problem as an algebra equation as follows: 2x + 5 = 839
Then you solve the equation by subtracting 5 from both sides, and then divide both sides by 2. Here is the math to illustrate better:
2x + 5 = 839
2x + 5 - 5 = 839 - 5
2x = 834
2x/2 = 834/2
x = 417
Answer = 417
The answer above is correct, because twice 417 is 834, and 5 more than 834 is in fact 839.
More Than Twice a number
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5 more than twice a number is 840
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