
The number (x) in: "9 more than twice a number is 989" 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 989.
To solve this, you first write the problem as an algebra equation as follows: 2x + 9 = 989
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 = 989
2x + 9 - 9 = 989 - 9
2x = 980
2x/2 = 980/2
x = 490
Answer = 490
The answer above is correct, because twice 490 is 980, and 9 more than 980 is in fact 989.
More Than Twice a number
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9 more than twice a number is 990
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