exam Maths Puzzle Numerical Ability

please show me step by step how this one is solved

1/x-2 = 3/x-3

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exam Other Question

i get the Pythagorean theorem, but the variables
confuse me. I tried a guess and check, but that confused me even more.

sincerely, Forrest Balman
Solve by the substitution mehtod

3x+5y=-11
-6x+y=44