Question

Use back substitution to solve this problem

Answer 1

z = -5

y = 1

x = 4

Explanation:

2z = -10 ➡ z = -5

4y -(-5) = 9 ➡ 4y = 4 and y = 1

2x + 3 + (-5) = 6 ➡ 2x = 8 and x = 4