jacquelineS7691
20.09.2020 •
Mathematics
2x + y - z=-7
5y- z=1
3z = 12
solve the 3x3 system
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Ответ:
Step-by-step explanation:
3z = 12
z = 4
5y - 4 = 1
5y = 5
y = 1
2x + 1 - 4 = -7
2x - 3 = -7
2x = -4
x = -2
(-2, 1, 4)
Ответ:
-13 times 11 i belive