Which of the following expressions represents "the product of 9 and a number, diminished by 7"?

For this case we have to:

x: Be the variable that represents the unknown number

Then, the product of 9 and a number is represented as:

If the product is reduced 7 units we have to:

Finally the expression is:

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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