Kelsey is thinking of a number. she says that the sum of a number and 9, multiplied by 2/3 is equal to -18

The number is -36

Step-by-step explanation:

To solve this problem, we will follow the steps below;

First, we need to re-write the problem in a mathematical format.

Let x be the number

"Kelsey is thinking of a number. She says that the sum of a number and 9, multiplied by 2/3 is equal to -18"  can be mathematically written as;

 =   -18

Open the bracket

 +  6  = -18

subtract 6 from both-side of the equation

 +  6 - 6 = -18-6

   = -24

Multiply both-side of the equation by 3

 × 3 = -24×3

2x = -72

Divide both-side of the equation by 2

=

x = - 36

The number is -36

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x