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Mathematics, 27.11.2021 07:40 patience233
Solve the system of equations by substitution.
3x + y = 9z
-5x + 2y = -4z
What is the value for y from the first equation, that could be substituted into the second equation?
-9z + 3x
3z + 9x
9z - 3x
-3x - 9z
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You know the right answer?
Solve the system of equations by substitution.
3x + y = 9z
-5x + 2y = -4z
...
-5x + 2y = -4z
...
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