What is the value of x
|5x + 6| + 6 = x​

Step-by-step explanation:

absolute(5x + 6) = x

There are 2 solutions to this

Solution 1

5x + 6 = x                    Subtract 5x from both sides.

5x - 5x + 6 = x - 5x

6 = - 4x                       Divide by - 4

6/ - 4  = -4x / -4

x = - 1.5

Solution 2

5x + 6 = - x

6 = -x - 5x

6 = - 6x

x = 6/-6

x = - 1

Here is a graph which shows the solutions.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional