Question

Solve the system of linear equations
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

x − 2y + 3z = −1
4x + 5y + z = 0
−x + y − 2z = 1
What is the value of z?

Answer 1

Equation 1 + Equation 2 gives you the result -y + z = 0
Which means y = z
This can be equation 4
Equation 2 + (4 * Equation 3) gives you the result 9y -7z = 4
then if you
This can be equation 5
substitute equation 4 into equation 5 you get
2z = 4
so z = 2

Answer 2

Thanks!

Answer 3

Your welcome!