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How can you eliminate the x-terms in this system
2x+4y=6 (-4 -3 -2 5)
3x+5y=7 (-2 2 3 )

How can you eliminate the x-terms in this system 2x+4y=6 (-4 -3 -2 5) 3x+5y=7 (-2 2 3 )-example-1
User Berkowitz
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1 Answer

7 votes

Answer:

the solution to the system of equations is x = -1 and y = 2.

Explanation:

To eliminate the x-terms, we need to multiply one or both of the equations by a constant so that the coefficients of x in both equations become equal. In this case, multiplying Equation 1 by 3 and Equation 2 by 2 will give us the same coefficient for x:

Equation 1 (after multiplying by 3): 6x + 12y = 18

Equation 2 (after multiplying by 2): 6x + 10y = 14

Now, we can subtract Equation 2 from Equation 1 to eliminate the x-term:

(6x + 12y) - (6x + 10y) = 18 - 14

Simplifying, we get:

2y = 4

Now, we can solve for y by dividing both sides of the equation by 2:

2y/2 = 4/2

y = 2

Now that we have the value of y, we can substitute it back into either Equation 1 or Equation 2 to find the value of x. Let's use Equation 1:

2x + 4(2) = 6

Simplifying, we get:

2x + 8 = 6

Subtracting 8 from both sides, we get:

2x = -2

Dividing both sides by 2, we find:

x = -1

User Mockee
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