The number (x) in: "9 more than three times a number is 780" 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 780.
To solve this, you first write the problem as an algebra equation as follows: 3x + 9 = 780
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 = 780
3x + 9 - 9 = 780 - 9
3x = 771
3x/3 = 771/3
x = 257
Answer = 257
Note: All answers are rounded to the nearest two decimals.
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