madisonlkay madisonlkay

06-10-2020
Mathematics

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IM TIMED HELP PLS , solve the system of equations using substitution method , y = 2x + 8 , y = 4x - 2

Respuesta :

06-10-2020

Answer:

x=5, y=18

Step-by-step explanation:

y=2x+8

x= (y-8)/2

Substitute in second equation,

y= 4((y-8)/2) -2

y= 2(y-8)-2

y= 2y-16-2

16+2=2y-y

18=y

Replace y value in first equation to find x,

18= 2x+8

18-8=2x

10=2x

5=x

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