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(9/5)*(-5*x-4) = -6 // + 6
(9/5)*(-5*x-4)+6 = 0
9/5*(-5*x-4)+6 = 0
9/5*(-5*x-4)+6 = 0
-9*x-6/5 = 0
-9*x-6/5 = 0
-9*x-6/5 = 0 // + 6/5
-9*x = 6/5 // : -9
x = 6/5/(-9)
x = -2/15
x = -2/15
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