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11x-15-2x^{2}-65x=\left(1-2x\right)\left(x-1\right)+125
Use the distributive property to multiply 5-2x by x-3 and combine like terms.
-54x-15-2x^{2}=\left(1-2x\right)\left(x-1\right)+125
Combine 11x and -65x to get -54x.
-54x-15-2x^{2}=3x-1-2x^{2}+125
Use the distributive property to multiply 1-2x by x-1 and combine like terms.
-54x-15-2x^{2}=3x+124-2x^{2}
Add -1 and 125 to get 124.
-54x-15-2x^{2}-3x=124-2x^{2}
Subtract 3x from both sides.
-57x-15-2x^{2}=124-2x^{2}
Combine -54x and -3x to get -57x.
-57x-15-2x^{2}+2x^{2}=124
Add 2x^{2} to both sides.
-57x-15=124
Combine -2x^{2} and 2x^{2} to get 0.
-57x=124+15
Add 15 to both sides.
-57x=139
Add 124 and 15 to get 139.
x=\frac{139}{-57}
Divide both sides by -57.
x=-\frac{139}{57}
Fraction \frac{139}{-57} can be rewritten as -\frac{139}{57} by extracting the negative sign.