Write an expression for the difference of three times a number and 9.
difference means you subtracted
three times a number ---- 3x
so I guess you want
3x - 9 or 9 - 3x, since you did not specify which is the larger.
To write the expression for the difference of three times a number and 9, you can use the following formula:
3x - 9
In this expression, "x" represents the number. Multiplying the number by 3 gives three times the number, and then subtracting 9 from that gives the desired difference.
To write an expression for the difference of three times a number and 9, we can follow these steps:
Step 1: Select a variable to represent the number. Let's use "x" as the variable.
Step 2: Multiply the variable by 3. This gives us the expression "3x."
Step 3: Subtract 9 from the result. The expression becomes "3x - 9."
Therefore, the expression for the difference of three times a number and 9 is "3x - 9."