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1. solve the system of equations: x+3y=9 3x+9y=27 please solve to get the x and y...

1. solve the system of equations:

x+3y=9

3x+9y=27

please solve to get the x and y solution

2. solve the system of equations, please state the x and y solution

9x-4y=23

15x+4y=41

3. solve the system of equations please state the x and y solution

x - y - z = 1

5x + 6y + z = 1

30x + 25y = 0

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