Math Problem Statement

x-7y=-37. 4x-3y=7

Solution

To solve the system of equations:

x - 7y = -37 \tag{1} 4x - 3y = 7 \tag{2}

We can use either the substitution method or the elimination method. Here, we'll use the substitution method.

Step 1: Solve Equation (1) for xx

From equation (1):

x = 7y - 37 \tag{3}

Step 2: Substitute Equation (3) into Equation (2)

Substitute x=7y37x = 7y - 37 into equation (2):

4(7y37)3y=74(7y - 37) - 3y = 7

Simplify:

28y1483y=728y - 148 - 3y = 7

25y148=725y - 148 = 7

Step 3: Solve for yy

Add 148 to both sides:

25y=15525y = 155

Now, divide by 25:

y=15525=6.2y = \frac{155}{25} = 6.2

Step 4: Substitute y=6.2y = 6.2 back into Equation (3)

Substitute y=6.2y = 6.2 into equation (3) to find xx:

x=7(6.2)37=43.437=6.4x = 7(6.2) - 37 = 43.4 - 37 = 6.4

Solution

The solution to the system is:

x=6.4,y=6.2x = 6.4, \quad y = 6.2

Would you like more details on this process or have any questions?

Here are 5 related questions to extend your understanding:

  1. How can you check if a solution satisfies both equations?
  2. What is the elimination method, and how does it differ from substitution?
  3. How would you solve the same system graphically?
  4. Can this system of equations have a different type of solution (e.g., no solution or infinitely many solutions)?
  5. How would you solve the system if the coefficients of xx and yy were different?

Tip: Always check your solution by substituting the values of xx and yy back into the original equations to verify they hold true.

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Math Problem Analysis

Mathematical Concepts

Algebra
System of Linear Equations
Substitution Method

Formulas

x = 7y - 37 (from x - 7y = -37)
4(7y - 37) - 3y = 7 (substitution into second equation)

Theorems

Solving systems of linear equations by substitution

Suitable Grade Level

Grades 8-10