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\left(x+2\right)\left(3-x\right)=\left(x-2\right)x+\left(x-2\right)\left(x+2\right)\left(-2\right)
Variable x cannot be equal to any of the values -2,2 since division by zero is not defined. Multiply both sides of the equation by \left(x-2\right)\left(x+2\right), the least common multiple of x-2,x+2.
x-x^{2}+6=\left(x-2\right)x+\left(x-2\right)\left(x+2\right)\left(-2\right)
Use the distributive property to multiply x+2 by 3-x and combine like terms.
x-x^{2}+6=x^{2}-2x+\left(x-2\right)\left(x+2\right)\left(-2\right)
Use the distributive property to multiply x-2 by x.
x-x^{2}+6=x^{2}-2x+\left(x^{2}-4\right)\left(-2\right)
Use the distributive property to multiply x-2 by x+2 and combine like terms.
x-x^{2}+6=x^{2}-2x-2x^{2}+8
Use the distributive property to multiply x^{2}-4 by -2.
x-x^{2}+6=-x^{2}-2x+8
Combine x^{2} and -2x^{2} to get -x^{2}.
x-x^{2}+6+x^{2}=-2x+8
Add x^{2} to both sides.
x+6=-2x+8
Combine -x^{2} and x^{2} to get 0.
x+6+2x=8
Add 2x to both sides.
3x+6=8
Combine x and 2x to get 3x.
3x=8-6
Subtract 6 from both sides.
3x=2
Subtract 6 from 8 to get 2.
x=\frac{2}{3}
Divide both sides by 3.