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(-2/3)*x-1 = 3*x-(124/3) // - 3*x-(124/3)
(-2/3)*x-(3*x)+124/3-1 = 0
(-2/3)*x-3*x+124/3-1 = 0
121/3-11/3*x = 0 // - 121/3
-11/3*x = -121/3 // : -11/3
x = -121/3/(-11/3)
x = 11
x = 11
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