Respuesta :

Gasaqui

Answer:option A

Step-by-step explanation:

2X-Y=20

2X-(-2X)=-20

2X+2X=-20

4X=-20

X=-20/4=-5

So we have: Y= -2(-5)=10

gmany

Answer:

A. (-5, 10)

Step-by-step explanation:

[tex]\left\{\begin{array}{ccc}2x-y=-20&(1)\\y=-2x&(2)\end{array}\right\\\\\text{Substitute (2) to (1):}\\\\2x-(-2x)=-20\\2x+2x=-20\\4x=-20\qquad\text{divide both sides by 4}\\x=-5\\\\\text{Put the value of }\ x\ \text{to (2):}\\\\y=-2(-5)\\y=10[/tex]

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