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ormation mit All wers e Left stion 1 mplete tion 2 plete ion 3 → Mete on 4 ed yet E Question 3. Use back substitution to find the value of

x when: x + 5y + 8z = -111.2 8y-z-48.9 5z = 43.5 Comment Enter your answer to one decimal place in the box below: Enter x:

Fig: 1