Answer:
x=-1, y=9. (-1, 9).
Step-by-step explanation:
6x-y=-15
x+2y=17
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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
