Asked by anonymous

Which of the linear systems has exactly one solution
A: -x+y=9
x-y=9

B: -x+y=9
x-y= -9

C: -x+y=9
-x-y=9

D: x-y= -9
-x+y= -9

12 years ago

Answered by erkanni

4 - y = 10

12 years ago

Answered by mine

-y=10-4=6

10 years ago

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