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3*((19/16)*x-1)+2*x = 777/8 // - 777/8
3*((19/16)*x-1)+2*x-(777/8) = 0
3*((19/16)*x-1)+2*x-777/8 = 0
3*(19/16*x-1)+2*x-777/8 = 0
(3*8*(19/16*x-1))/8+(2*8*x)/8-777/8 = 0
3*8*(19/16*x-1)+2*8*x-777 = 0
89/2*x-777-24 = 0
89/2*x-801 = 0
(89/2*x-801)/8 = 0
(89/2*x-801)/8 = 0 // * 8
89/2*x-801 = 0
89/2*x-801 = 0 // + 801
89/2*x = 801 // : 89/2
x = 801/89/2
x = 18
x = 18
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