To determine how many solutions the system of equations has, we can start by rearranging and analyzing the given equations:
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The first equation is: \[ -5x + y = -18 \implies y = 5x - 18 \]
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The second equation is: \[ 10x - 2y = 36 \implies -2y = -10x + 36 \implies y = 5x - 18 \]
Now, we can see that both equations simplify to the same equation: \[ y = 5x - 18 \]
Since both equations describe the same line, they have infinitely many solutions (any point on the line satisfies both equations).
Thus, the answer is: infinite infinite