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\left(x-3\right)\left(4-2x\right)=-x\times 2x
Variable x cannot be equal to any of the values 0,3 since division by zero is not defined. Multiply both sides of the equation by x\left(x-3\right), the least common multiple of x,3-x.
10x-2x^{2}-12=-x\times 2x
Use the distributive property to multiply x-3 by 4-2x and combine like terms.
10x-2x^{2}-12=-x^{2}\times 2
Multiply x and x to get x^{2}.
10x-2x^{2}-12=-2x^{2}
Multiply -1 and 2 to get -2.
10x-2x^{2}-12+2x^{2}=0
Add 2x^{2} to both sides.
10x-12=0
Combine -2x^{2} and 2x^{2} to get 0.
10x=12
Add 12 to both sides. Anything plus zero gives itself.
x=\frac{12}{10}
Divide both sides by 10.
x=\frac{6}{5}
Reduce the fraction \frac{12}{10} to lowest terms by extracting and canceling out 2.