Math Problem Statement

x=4 x+y=-6 4x-3y+2z=26

Solution

You have a system of three equations:

  1. x=4x = 4
  2. x+y=6x + y = -6
  3. 4x3y+2z=264x - 3y + 2z = 26

Step 1: Solve for yy

From equation (1), we know x=4x = 4. Substitute this into equation (2):

4+y=64 + y = -6

Solve for yy:

y=64=10y = -6 - 4 = -10

Step 2: Solve for zz

Now substitute x=4x = 4 and y=10y = -10 into equation (3):

4(4)3(10)+2z=264(4) - 3(-10) + 2z = 26

Simplify the equation:

16+30+2z=2616 + 30 + 2z = 26

46+2z=2646 + 2z = 26

Solve for zz:

2z=2646=202z = 26 - 46 = -20

z=202=10z = \frac{-20}{2} = -10

Final Solution:

  • x=4x = 4
  • y=10y = -10
  • z=10z = -10

Would you like more details on any step? Here are some follow-up questions:

  1. How do we substitute values in systems of equations?
  2. What are the different methods for solving systems of equations?
  3. Can substitution always be used to solve such systems?
  4. How can I verify the solution to a system of equations?
  5. What happens if a system has no solution or infinitely many solutions?

Tip: Always check your solutions by plugging them back into the original equations.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Systems of Equations
Substitution Method

Formulas

Substitution method in solving systems of equations

Theorems

None specifically, but uses properties of equality and basic algebraic manipulation

Suitable Grade Level

Grades 9-12