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(2/3)*(3*x-(15*y))-(11*x)+9*y = 0
(2/3)*(3*x-15*y)-11*x+9*y = 0
2/3*(3*x-15*y)-11*x+9*y = 0
2/3*(3*x-15*y)-11*x+9*y = 0
9*y-9*x-10*y = 0
-9*x-y = 0
-9*x-y = 0
-9*x-y = 0 // + y
-9*x = y // : -9
x = y/(-9)
x = y/(-9)
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