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\left(x-5\right)\times 2x=\left(x-7\right)\left(x-5\right)\times 3+\left(x-7\right)\left(1-x\right)
Variable x cannot be equal to any of the values 5,7 since division by zero is not defined. Multiply both sides of the equation by \left(x-7\right)\left(x-5\right), the least common multiple of x-7,x-5.
\left(2x-10\right)x=\left(x-7\right)\left(x-5\right)\times 3+\left(x-7\right)\left(1-x\right)
Use the distributive property to multiply x-5 by 2.
2x^{2}-10x=\left(x-7\right)\left(x-5\right)\times 3+\left(x-7\right)\left(1-x\right)
Use the distributive property to multiply 2x-10 by x.
2x^{2}-10x=\left(x^{2}-12x+35\right)\times 3+\left(x-7\right)\left(1-x\right)
Use the distributive property to multiply x-7 by x-5 and combine like terms.
2x^{2}-10x=3x^{2}-36x+105+\left(x-7\right)\left(1-x\right)
Use the distributive property to multiply x^{2}-12x+35 by 3.
2x^{2}-10x=3x^{2}-36x+105+8x-x^{2}-7
Use the distributive property to multiply x-7 by 1-x and combine like terms.
2x^{2}-10x=3x^{2}-28x+105-x^{2}-7
Combine -36x and 8x to get -28x.
2x^{2}-10x=2x^{2}-28x+105-7
Combine 3x^{2} and -x^{2} to get 2x^{2}.
2x^{2}-10x=2x^{2}-28x+98
Subtract 7 from 105 to get 98.
2x^{2}-10x-2x^{2}=-28x+98
Subtract 2x^{2} from both sides.
-10x=-28x+98
Combine 2x^{2} and -2x^{2} to get 0.
-10x+28x=98
Add 28x to both sides.
18x=98
Combine -10x and 28x to get 18x.
x=\frac{98}{18}
Divide both sides by 18.
x=\frac{49}{9}
Reduce the fraction \frac{98}{18} to lowest terms by extracting and canceling out 2.