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Solve the system of equations -4x+8y=40−4x+8y=40 and -2x+y=-10−2x+y=−10 by combining the equations.

User Ben Last
by
7.7k points

1 Answer

2 votes

Answer:

The answer is x = y = 10.

Explanation:

It is given that,
-4x + 8y = 40\\-x + 2y = 10\\x = 2y - 10.

Another equation is given by,
-2x + y = -10\\y = 2x - 10.

Putting the value x = 2y - 10, in the second equation, we get
y = 4y - 20 - 10\\3y = 30\\y = 10.


x = 2y - 10 = 20 - 10 = 10

User Nirmalsinh Rathod
by
7.9k points

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