Its algebra. The original equation is

To solve for a variable, we reverse the order of operations, beginning with addition/subtraction, and then multiplication/division. To remove a number from one side, we must do the opposite to the other side. In this case, to get rid of the -121 we must add 121 to the -164. This gives us -43. Then, to get the x by itself, we must multiply the other side by 3. -43*3=129
When we are doing the opposite of an operation to the other side, we are really reversing the operation and, to keep both sides equal, we must do whatever we have done to one side to the other side. So when we have -121, we add 121 as it equals 0, therefore it is gone. Since a equation must be balanced, we have to do what we did to the other side (adding 121).
Answer:
x= 10
Step-by-step explanation:
hay esta la respuesta:)
Cage.....dog travel kit..... shelter.....pound.... it really depends on what you mean by dog kennel.
This solid object contains 8 sides.
The side that is facing you has a surface area:
The side exactly opposite this one has the same surface area - 2 sides with this surface area in total.
The bottom side has a surface area:

The side to your right has a surface area:

The side to your left has a surface area:

The side to your top left has a surface area:

The side beside the side to the top left has a surface area:

The side at the very top has a surface area:

Combined, the surface area is:

Therefore the answer is: C