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(-2/3)*x-7 = x-73/9 // - x-73/9
(-2/3)*x-x-(-73/9)-7 = 0
(-2/3)*x-x+73/9-7 = 0
10/9-5/3*x = 0 // - 10/9
-5/3*x = -10/9 // : -5/3
x = -10/9/(-5/3)
x = 2/3
x = 2/3
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