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Help plz i will give extra points!!!

Help plz i will give extra points!!!-example-1
User Muggles
by
7.0k points

1 Answer

1 vote

Answer:

(-2,8)

Explanation:

-7x-2y = -2

-6x+8y = 76

Multiply the first equation by 4 to eliminate y

-28x -8y = -8

Then add it to the second equation

-28x -8y = -8

-6x+8y = 76

--------------------

-34x = 68

Divide by -34

-34x/-34 = 68/-34

x = -2

Now substitute back into one of the equations to find y

-6x +8y = 76

-6(-2) +8y = 76

12+8y = 76

Subtract 12 from each side

12+8y-12 = 76-12

8y = 64

Divide each side by 8

8y/8 = 64/6

y=8

(-2,8)

User Dinh Quan
by
7.4k points