haleg803 haleg803

10-12-2019
Mathematics

contestada

Solve the system of equations using substitution

Solve the system of equations using substitution class=

Respuesta :

Yang100 Yang100

11-12-2019

Answer:

x=-1, y=9. (-1, 9).

Step-by-step explanation:

6x-y=-15

x+2y=17

--------------

y=6x-(-15)

y=6x+15

x+2(6x+15)=17

x+12x+30=17

13x=17-30

13x=-13

x=-13/13

x=-1

-1+2y=17

2y=17-(-1)

2y=17+1

2y=18

y=18/2

y=9

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