
The number (x) in: "9 more than twice a number is 979" 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 979.
To solve this, you first write the problem as an algebra equation as follows: 2x + 9 = 979
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 = 979
2x + 9 - 9 = 979 - 9
2x = 970
2x/2 = 970/2
x = 485
Answer = 485
The answer above is correct, because twice 485 is 970, and 9 more than 970 is in fact 979.
More Than Twice a number
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9 more than twice a number is 980
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