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x^{2}-5x+6=x^{2}-3x+6
Variable x cannot be equal to any of the values -3,2 since division by zero is not defined. Multiply both sides of the equation by \left(x-2\right)\left(x+3\right).
x^{2}-5x+6-x^{2}=-3x+6
Subtract x^{2} from both sides.
-5x+6=-3x+6
Combine x^{2} and -x^{2} to get 0.
-5x+6+3x=6
Add 3x to both sides.
-2x+6=6
Combine -5x and 3x to get -2x.
-2x=6-6
Subtract 6 from both sides.
-2x=0
Subtract 6 from 6 to get 0.
x=0
Product of two numbers is equal to 0 if at least one of them is 0. Since -2 is not equal to 0, x must be equal to 0.