mendozafernando680 mendozafernando680

06-06-2020
Mathematics

contestada

Solve each system by elimination
-9x -4y=2
7x +4y = -6

Respuesta :

kimhuyvogiu kimhuyvogiu

06-06-2020

Answer:

cộng vế theo vế ta đc :

-2x=-4<=>x=2

thay x=2 vào 1 trong 2 ptrình ta đc: y=-5

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