
The number (x) in: "3 more than twice a number is 309" 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 3, you get 309.
To solve this, you first write the problem as an algebra equation as follows: 2x + 3 = 309
Then you solve the equation by subtracting 3 from both sides, and then divide both sides by 2. Here is the math to illustrate better:
2x + 3 = 309
2x + 3 - 3 = 309 - 3
2x = 306
2x/2 = 306/2
x = 153
Answer = 153
The answer above is correct, because twice 153 is 306, and 3 more than 306 is in fact 309.
More Than Twice a number
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3 more than twice a number is 310
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