5/3x + 4 = 2/3x =
a. x= 12/7
b. x= -4
c. x= 4
d. x= -12/7

B. (x=-4)

Step-by-step explanation:

Start by subtracting 2/3x on both sides:

3/3x+4=0

3/3x can be rewritten as just X because 3/3=1

Now your equation should look like this:

x+4=0

Now, subtract 4 on both sides:

x=-4

Nothing else can be done giving you a final answer of -4!

Let me know if you have any further questions :)

this is answer of 144 cubic meters