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Solve the system of equations by elimination:

-4+2y=-38 4x+y=11
a) (x = -6, y = -17)
b) (x = 6, y = -17)
c) (x = -6, y = 17)
d) (x = 6, y = 17)

asked
User Areza
by
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1 Answer

3 votes

Final answer:

To solve the system of equations by elimination, we need to eliminate one variable by adding or subtracting the equations. However, in this case, the resulting equation is not possible, which means there is no solution to the system of equations.

Step-by-step explanation:

To solve the system of equations by elimination, we need to eliminate one variable by adding or subtracting the equations. Let's start by eliminating the y variable.

Given equations:

-4 + 2y = -38

4x + y = 11

By multiplying the second equation by 2, we can create a cancellation:

-4 + 2y = -38

8x + 2y = 22

Now, add the two equations:

8x - 4 + 2y + 2y = 22 - 38

8x - 2 + 4y = -16

Simplify:

8x + 4y = -16

This leaves us with one equation in two variables. To solve for x, we need another equation. Let's go back to the given equations:

-4 + 2y = -38

4x + y = 11

By multiplying the first equation by 4, we can create a cancellation:

-16 + 8y = -152

4x + y = 11

Now, add the two equations:

4x - 16 + y + y = 11 - 152

4x + 2y = -141

Simplify:

4x + 2y = -141

Now, we have a system of two equations with the same coefficients:

8x + 4y = -16

4x + 2y = -141

From here, we can solve the system of equations. Multiplying the second equation by 2:

8x + 4y = -16

8x + 4y = -282

Now, subtract the equations:

8x + 4y - (8x + 4y) = -16 - (-282)

Simplify:

0 = -16 + 282

0 = 266

Since this equation is not possible, there is no solution to the system of equations by elimination.

answered
User Syex
by
8.8k points

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