steviedude316
04.07.2019 •
Mathematics
Solve the simultaneous equation: 3x+y=-4 3x-4y=6
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Ответ:
3x+y=-4
3x-4y=6
subtract
5y = -10
y = -2
Substitute y = -2 into 3x + y = -4
3x + (-2) = -4
3x - 2 = -4
3x = -2
x = -2/3
Answer
Solution x = -2/3, y = - 2 OR (-2/3 , - 2)
Ответ:
What grade is that?
Step-by-step explanation:
I need to know so I can check one of my old books for the answer.