Answer:
x = -5, y = -6, z = -3
Step-by-step explanation:
Given the system of three equations:

Write the augmented matrix for the system of equations

Find the reduced row-echelon form of the augmented matrix for the system of equations:

Thus, the system of three equations is

From the last equation:

Substitute it into the second equation:

Substitute y = -6 and z = -3 into the first equation:

The answer is B for the first part, and I think the solution is (6,7).
Answer:
your answer is 10/3 (fraction)
Step-by-step explanation:
120-40=80
4 x 6=24
80/24=
- first divide both sides by four and get 20/6
- then divide by 2 to get 10/3 (fraction form)
Step 1. Use the Quotient Rule: x^a/x^b = x^a-b
|-10^5-3|
Step 2. Simplify 5 - 3 to 2
|-10^2|
Step 3. Simplify 10^2 to 100
|-100|
Step 4. Simplify
100