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6x^{2}-7x-5=6x^{2}-5x+15
Use the distributive property to multiply 3x-5 by 2x+1 and combine like terms.
6x^{2}-7x-5-6x^{2}=-5x+15
Subtract 6x^{2} from both sides.
-7x-5=-5x+15
Combine 6x^{2} and -6x^{2} to get 0.
-7x-5+5x=15
Add 5x to both sides.
-2x-5=15
Combine -7x and 5x to get -2x.
-2x=15+5
Add 5 to both sides.
-2x=20
Add 15 and 5 to get 20.
x=\frac{20}{-2}
Divide both sides by -2.
x=-10
Divide 20 by -2 to get -10.