Answer: I was kind of confused but here: x=3, y=21. if i am wrong try to be more elaborate and i will try to help
Answer:
x=1, y=19. (1, 19).
Explanation:
-9x+y=10
10x-y=-9
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x=1
10(1)-y=-9
10-y=-9
y=10-(-9)=10+9=19
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