Solve for xxx: dfrac10x−9=dfrac11x+9\\dfrac{10}{x - 9} = \\dfrac{11}{x + 9}dfrac10x−9=dfrac11x+9
x=21x = 21x=21
x=207x = 207x=207
x=189x = 189x=189
x=171x = 171x=171