exam Maths Puzzle Numerical Ability

Solve the system using RREF.

3x-2y-3z=-1
x-y+z=-4
2x+3y+5z=14

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Please help me with this question:
I am supposed to condense the logaithmic expresssion then write as a single log with a coeffecient as 1 and evaluate if possible.

^1/6(^log2x Choose the rectangular coordinates for the following polar coordinate: (-6, 3pi/2)
is it (-6, 0)??