Math Problem Statement

5x + 2y=1 -3x + 3y=5

Solution

You have the system of linear equations:

  1. 5x+2y=15x + 2y = 1
  2. 3x+3y=5-3x + 3y = 5

To solve this system, let's use the elimination method or substitution method. I will start by using the elimination method.

Step 1: Eliminate one variable

We want to eliminate one variable by making the coefficients of either xx or yy the same in both equations. Here, I'll multiply the first equation by 3 and the second equation by 2 to make the coefficients of yy match.

Equation 1: (5x+2y=1)×3    15x+6y=3(5x + 2y = 1) \times 3 \implies 15x + 6y = 3

Equation 2: (3x+3y=5)×2    6x+6y=10(-3x + 3y = 5) \times 2 \implies -6x + 6y = 10

Now we have the system:

15x+6y=315x + 6y = 3 6x+6y=10-6x + 6y = 10

Step 2: Subtract the second equation from the first equation to eliminate yy:

(15x+6y)(6x+6y)=310(15x + 6y) - (-6x + 6y) = 3 - 10 15x+6y+6x6y=715x + 6y + 6x - 6y = -7 21x=721x = -7

Step 3: Solve for xx

x=721=13x = \frac{-7}{21} = -\frac{1}{3}

Step 4: Substitute x=13x = -\frac{1}{3} into one of the original equations

Let’s substitute into the first equation 5x+2y=15x + 2y = 1:

5(13)+2y=15\left(-\frac{1}{3}\right) + 2y = 1 53+2y=1-\frac{5}{3} + 2y = 1 Add 53\frac{5}{3} to both sides: 2y=1+532y = 1 + \frac{5}{3} Write 1 as 33\frac{3}{3}: 2y=33+53=832y = \frac{3}{3} + \frac{5}{3} = \frac{8}{3} Now divide by 2: y=83÷2=86=43y = \frac{8}{3} \div 2 = \frac{8}{6} = \frac{4}{3}

Final solution:

x=13,y=43x = -\frac{1}{3}, \quad y = \frac{4}{3}

So, the solution to the system of equations is:

x=13,y=43x = -\frac{1}{3}, \quad y = \frac{4}{3}

Would you like me to explain any part of the solution in more detail or would you like to explore other methods of solving systems of equations?

Here are 5 related questions to further explore:

  1. How do you solve a system of linear equations using substitution?
  2. How can you check the solution to a system of equations?
  3. What is the graphical interpretation of solving a system of linear equations?
  4. Can you solve a system of equations with no solution or infinitely many solutions?
  5. How do you solve systems of equations involving three variables?

Tip: Always try to eliminate one variable at a time to simplify the system!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
System of Linear Equations
Elimination Method
Substitution Method

Formulas

5x + 2y = 1
-3x + 3y = 5
x = -7/21 = -1/3
y = 4/3

Theorems

Linear system solution
Elimination method
Substitution method

Suitable Grade Level

Grades 8-10