Math Problem Statement

Use substitution to solve the system. y = 2x + 14 5x - 2y = -33

Solution

We are asked to solve this system of equations using substitution:

y = 2x + 14 \tag{1} 5x - 2y = -33 \tag{2}

Step 1: Substitute yy from equation (1) into equation (2).

From equation (1), we know that y=2x+14y = 2x + 14. We will substitute this into equation (2):

5x2(2x+14)=335x - 2(2x + 14) = -33

Step 2: Simplify the equation.

Distribute the 2-2 on the left side:

5x4x28=335x - 4x - 28 = -33

Combine like terms:

x28=33x - 28 = -33

Step 3: Solve for xx.

Add 28 to both sides:

x=33+28x = -33 + 28 x=5x = -5

Step 4: Substitute x=5x = -5 back into equation (1).

Now that we know x=5x = -5, substitute it into equation (1) to find yy:

y=2(5)+14y = 2(-5) + 14 y=10+14y = -10 + 14 y=4y = 4

Final Solution:

The solution to the system is: x=5,y=4x = -5, \quad y = 4

Would you like further clarification on any step or additional details?


Here are 5 related questions to expand on this problem:

  1. How would you solve the system of equations using the elimination method?
  2. Can you graph the two equations and verify the solution visually?
  3. What happens if you use substitution with different forms of the equation?
  4. How does the substitution method work for non-linear systems of equations?
  5. How would this problem change if the second equation had been 5x+2y=335x + 2y = -33?

Tip: When solving systems of equations, always ensure that you correctly substitute the variable, and carefully simplify to avoid mistakes in algebraic manipulation.

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations
Substitution Method

Formulas

y = 2x + 14
5x - 2y = -33

Theorems

Linear Equation Theorem

Suitable Grade Level

Grades 8-10