Solution: Solve the simultaneous equations: x + y = - 4, x + z - 1 = 0 and y + z + 1 = 0

Solve the simultaneous equations: x + y = - 4, x + z - 1 = 0 and y + z + 1 = 0. How to solve problems involving three equations and three unknowns?

Solve the simultaneous equations:  x + y = - 4, x + z - 1 = 0 and y + z + 1 = 0

Problem Statement: ME Board October 1996

Solve the simultaneous equations:

x + y = - 4

x + z - 1 = 0

y + z + 1 = 0

  • A. x = -1, y = -5, z = 3
  • B. x = 1, y = 2, z = -3
  • C. x = -1, y = -3, z = 2
  • D. x = -2, y = -3, z = -1

Problem Answer:

The value of x is equal to -1, y is equal to -3 and z is equal to 2.

Solution:

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