Math Problem Statement

4x-y=-1;-x+y=x-5

Solution

Let's solve the given system of equations:

Equations:

  1. 4xy=14x - y = -1
  2. x+y=x5-x + y = x - 5

Step 1: Simplify the second equation.

Starting with x+y=x5-x + y = x - 5:

  • Combine like terms: y=2x5y = 2x - 5

Now we have:

  1. 4xy=14x - y = -1
  2. y=2x5y = 2x - 5

Step 2: Substitute y=2x5y = 2x - 5 into the first equation.

Replace yy in 4xy=14x - y = -1: 4x(2x5)=14x - (2x - 5) = -1 Simplify: 4x2x+5=14x - 2x + 5 = -1 2x+5=12x + 5 = -1 2x=62x = -6 x=3x = -3


Step 3: Solve for yy.

Substitute x=3x = -3 into y=2x5y = 2x - 5: y=2(3)5y = 2(-3) - 5 y=65y = -6 - 5 y=11y = -11


Final Solution:

x=3,y=11x = -3, \, y = -11


Would you like more details or have any questions?
Here are 5 related questions to explore further:

  1. How do you graphically solve systems of linear equations?
  2. What are the different methods for solving systems of equations (e.g., substitution, elimination)?
  3. How can you verify solutions to a system of equations?
  4. What happens if a system of equations has no solution or infinitely many solutions?
  5. How do systems of equations apply in real-life problems?

Tip: Always verify your solution by substituting the values back into the original equations!

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations
Substitution Method

Formulas

Substitution method for solving systems of linear equations

Theorems

Linear equations in two variables

Suitable Grade Level

Grades 8-10