Question

- x - 4 y - z = 7
- 3 x + 4 y + 5 z = - 3
x + 2 y = - 4

Answer 1

Explanation:

Evaluate

−

x

−

4

y

−

z

, then set it equal to

−

4

.

=

−

4

Answer 2

y = -x/2 - 2 and z = x + 1

Hope This Helps!!!