The number (x) in: "9 more than three times a number is 438" 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 438.
To solve this, you first write the problem as an algebra equation as follows: 3x + 9 = 438
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 = 438
3x + 9 - 9 = 438 - 9
3x = 429
3x/3 = 429/3
x = 143
Answer = 143
Note: All answers are rounded to the nearest two decimals.
|
|
