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ioda
3 years ago
6

How many solutions are in -x-y=3 and y=x-3

Mathematics
1 answer:
Klio2033 [76]3 years ago
5 0
See, pls, offered explanation:
1) the both equations are linear function, it means system made up of the both equation has the only solution.
2) if to prove this:
\left \{ {{-x-y=3} \atop {-x+y=-3}} \right.  \left \{ {{x=0} \atop {y=-3}} \right.
Answer: one solution.
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