Respuesta :

Multiply the 1st row by 2

4x+2y=40

4x-2y=40 

Subtract the 2nd row from the 1st row

4y=0
Solve for y in the above equation

4x+2×0=40 
Solve for x in the above equation

x = 10 

y = 0 

Answer:

(10,0)

Step-by-step explanation:

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