Math Problem Statement

Slove

Solve the system of equations: x + 7y = 4, 2x - 3y = 2.

Solution

The image contains two equations:

x+7y=4x + 7y = 4 2x3y=22x - 3y = 2

Let's solve this system of linear equations using the substitution or elimination method.

Step 1: Solve for xx from the first equation:

x=47yx = 4 - 7y

Step 2: Substitute x=47yx = 4 - 7y into the second equation:

2(47y)3y=22(4 - 7y) - 3y = 2 Expanding: 814y3y=28 - 14y - 3y = 2 Simplifying: 817y=28 - 17y = 2 17y=28-17y = 2 - 8 17y=6-17y = -6 y=617=617y = \frac{-6}{-17} = \frac{6}{17}

Step 3: Substitute y=617y = \frac{6}{17} back into the equation for xx:

x=47(617)x = 4 - 7\left(\frac{6}{17}\right) x=44217x = 4 - \frac{42}{17} x=68174217=2617x = \frac{68}{17} - \frac{42}{17} = \frac{26}{17}

Thus, the solution is: x=2617,y=617x = \frac{26}{17}, \quad y = \frac{6}{17}

Let me know if you have any questions or need further clarification!

Here are 5 related questions:

  1. How can you check if the solution is correct by substituting the values of xx and yy back into the original equations?
  2. What are other methods for solving systems of linear equations besides substitution and elimination?
  3. Can this system be solved using matrices or determinants (Cramer's rule)?
  4. What happens when a system of equations has no solution or infinitely many solutions?
  5. How would you solve the system graphically, and what would the graph look like?

Tip: Always verify the solution by plugging the values back into both original equations!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Systems of Equations

Formulas

Substitution Method
Elimination Method

Theorems

Linear Equation Theorem

Suitable Grade Level

Grades 9-11