Respuesta :

hello : 
-x + 2y = 6 ...(1)

6y = x + 18....(2)
multip(1) by : 3
-3x+6y=18
6y=3x+18
by (2) : 6y=x+18
3x+18 = x+18

2x=0
x=0

Answer:

For those of you doing unit 7,  lesson 2  solving systems using substitution questions 1-4

Step-by-step explanation:

1. A

2. C

3. C

4. B

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