Question

Nine less than the product of 5 and a number is equal to 7

Answer 1

In this case the answer is very simple.

We must write the equation analyzing the question.

Step 01:

x = Unknown number

Step 02:

Equation

9 - (5 * x) = 7

9 - 5x = 7

- 5 x = 7 - 9

- 5 x = - 2

x = -2 / -5

x = 2 / 5

The answer is:

The unknown number is 2 / 5