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(1/3)*x-6*x-1 = 133/3 // - 133/3
(1/3)*x-6*x-(133/3)-1 = 0
(1/3)*x-6*x-133/3-1 = 0
-17/3*x-136/3 = 0 // + 136/3
-17/3*x = 136/3 // : -17/3
x = 136/3/(-17/3)
x = -8
x = -8
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