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(1/6)*(x+3)-4 = -3.2 // + 3.2
(1/6)*(x+3)-4+3.2 = 0
1/6*(x+3)-4+3.2 = 0
1/6*(x+3)-4+3.2 = 0
1/6*x-7/2+3.2 = 0
1/6*x-0.3 = 0
1/6*x-0.3 = 0
1/6*x-0.3 = 0 // + 0.3
1/6*x = 0.3 // : 1/6
x = 0.3/1/6
x = 1.79999996
x = 1.79999996
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