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(-2/3)*x+2.8 = -8.2 // + 8.2
(-2/3)*x+2.8+8.2 = 0
11-2/3*x = 0 // - 11
-2/3*x = -11 // : -2/3
x = -11/(-2/3)
x = 33/2
x = 33/2
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