6x−4y=−24 4x−8y=−32 What is the ordered pair for both of them?

1 answer:

6 0

Multiply the first equation by -2 to eliminate a variable so it becomes:
-12x+8y=48
4x-8y=-32
Add them together.
-8x=16
x=-2
Plug it in one equation.
6(2)-4y=-24
12-4y=-24
-4y=-12
y=3
Ordered pair is: (-2,3)

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If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

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$8x-5y=21$ Equation:1