keke1871
18.02.2021 •
Mathematics
2x + y = 7
-2x - y = 6
Solve systems of equations by substitution
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Ответ:
No solution.
Step-by-step explanation:
2x + y = 7
-2x - y = 6
From the first equation:
y = 7 - 2x
Plug this into the second equation:
-2x - (7 - 2x) = 6
-2x + 2x = 6 + 7
0 = 13
this doesn't make sense so theer is:
No solution.
Ответ:
Factors of 27: -1, 1, -3, 3, -9, 9, -27, 27
Possible rational roots: -1/3, 1/3, 1, -1, 3/1, -3/1, 9/1, -9/1, -27/1, 27/1