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12.11.2020 •
Mathematics
How many solutions does the system have?
4x - 2y = 8
2x + y = 2
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Ответ:
x = 3/2, y = -1
Step-by-step explanation:
4x - 2y = 8 --(1)
2x + y = 2
y = 2 - 2x --(2)
sub (2) into (1):
4x - 2(2 -2x) = 8
4x -4 + 4x = 8
8x = 12
x = 3/2
when x = 3/2, y = -1
Ответ: