if x-y/x+y =9. what is the value of x/(-y)
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y=-x(x-9)/x-1 and x≠o
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1
Answer:
x-y/x+y=9/1
1(x-y) =9(x+y)
x-y=9x+9y
9x-x=9y+y
8x=10y
x/-y=10/-8
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