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2.2*(x-4) = (1/2)*X-4 // - (1/2)*X-4
2.2*(x-4)-((1/2)*X)+4 = 0
2.2*(x-4)+(-1/2)*X+4 = 0
2.2*(x-4)-X/2+4 = 0
(2*2.2*(x-4))/2-X/2+(2*4)/2 = 0
2*2.2*(x-4)-X+2*4 = 0
4.4*x-X-17.6+8 = 0
4.4*x-X-9.6 = 0
(4.4*x-X-9.6)/2 = 0
(4.4*x-X-9.6)/2 = 0 // * 2
4.4*x-X-9.6 = 0
4.4*x-X-9.6 = 0 // + -X-9.6
4.4*x = -(-X-9.6) // : 4.4
x = (-(-X-9.6))/4.4
x = 0.22727273*(X+9.6)
x = 0.22727273*(X+9.6)
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