
The number (x) in: "3 more than twice a number is 623" 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 623.
To solve this, you first write the problem as an algebra equation as follows: 2x + 3 = 623
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 = 623
2x + 3 - 3 = 623 - 3
2x = 620
2x/2 = 620/2
x = 310
Answer = 310
The answer above is correct, because twice 310 is 620, and 3 more than 620 is in fact 623.
More Than Twice a number
Go here to solve a similar algebra problem.
3 more than twice a number is 624
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