ral100 ral100
  • 26-01-2022
  • Mathematics
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How many solutions does the following system have?
x + y=7
- x - y = 7

How many solutions does the following system have x y7 x y 7 class=
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HK0629
HK0629 HK0629
  • 26-01-2022
Answer: A
-x - y = 7
-(7 - y) - y = 7
-7 + y - y = 7
y - y = 14
0 = 14
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