Some one step by step explanation

2.)

-->

So y = -4.

3.)

Combine like terms:

-->

Isolate x --->

---->

So x = -2

4.)

-->

Combine like terms --->

This equation has many possible solutions.

5.)

-->

Combine like terms --->

---->

----->

So x = -1.

6.)

Distribute --->

This equation has many possible solutions.

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation: