The number (x) in: "9 more than three times a number is 351" is what we are solving here.
In other words, you are looking for a number (x) that if you multiply it by three (same as three times) and then add 9, you get 351.
To solve this, you first write the problem as an algebra equation as follows: 3x + 9 = 351
Then you solve the equation by subtracting 9 from both sides, and then divide both sides by 3. Here is the math to
illustrate better:
3x + 9 = 351
3x + 9 - 9 = 351 - 9
3x = 342
3x/3 = 342/3
x = 114
Answer = 114
Note: All answers are rounded to the nearest two decimals.
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