Math Problem Statement

solve systems with elimination 2x+ 2y = 6 3x - 5 = y

Solution

Let's solve the system of equations using the elimination method. The given system is:

1)2x+2y=61) \quad 2x + 2y = 6 2)3x5=y2) \quad 3x - 5 = y

Step 1: Substitute the expression for yy from equation (2) into equation (1)

From equation (2), we have:

y=3x5y = 3x - 5

Substitute this into equation (1):

2x+2(3x5)=62x + 2(3x - 5) = 6

Step 2: Simplify the equation

Now, simplify the expression:

2x+6x10=62x + 6x - 10 = 6 8x10=68x - 10 = 6

Step 3: Solve for xx

Add 10 to both sides:

8x=168x = 16

Now, divide both sides by 8:

x=2x = 2

Step 4: Solve for yy

Now that we have x=2x = 2, substitute this back into equation (2) to find yy:

y=3(2)5=65=1y = 3(2) - 5 = 6 - 5 = 1

Final Solution:

The solution to the system of equations is: x=2,y=1x = 2, \quad y = 1


Would you like more details on the solution process, or do you have any questions?

Here are some related questions you can explore:

  1. How do you use substitution to solve a system of equations?
  2. What happens if the system of equations has no solution?
  3. How do you solve a system of equations with three variables?
  4. What are the differences between the elimination method and substitution method?
  5. Can you solve a system of equations that has infinitely many solutions?

Tip: Always check your solution by substituting the values of xx and yy back into the original equations!

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Equations
Substitution Method
Elimination Method

Formulas

Standard linear equation form: ax + by = c

Theorems

Consistency and solutions of linear systems

Suitable Grade Level

Grades 8-10