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(5/4)*((6/12)*x-9)+7/2+7/3 = 0
5/4*(1/2*x-9)+7/2+7/3 = 0
(5/4*2*3*(1/2*x-9))/(2*3)+(3*7)/(2*3)+(2*7)/(2*3) = 0
5/4*2*3*(1/2*x-9)+3*7+2*7 = 0
15/4*x-93/2+14 = 0
15/4*x-65/2 = 0
(15/4*x-65/2)/(2*3) = 0
(15/4*x-65/2)/(2*3) = 0 // * 2*3
15/4*x-65/2 = 0
15/4*x-65/2 = 0 // + 65/2
15/4*x = 65/2 // : 15/4
x = 65/2/15/4
x = 26/3
x = 26/3
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