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x in (-oo:+oo)
-((5/4)*x)-116/63 = (1/3)*((8/7)*x-1) // - (1/3)*((8/7)*x-1)
-((1/3)*((8/7)*x-1))-((5/4)*x)-116/63 = 0
(-1/3)*((8/7)*x-1)+(-5/4)*x-116/63 = 0
(-5*x)/4-1/3*(8/7*x-1)-116/63 = 0
(-1/3*4*63*(8/7*x-1))/(4*63)+(-5*63*x)/(4*63)+(-116*4)/(4*63) = 0
-1/3*4*63*(8/7*x-1)-5*63*x-116*4 = 0
84-411*x-464 = 0
-411*x-380 = 0
(-411*x-380)/(4*63) = 0
(-411*x-380)/(4*63) = 0 // * 4*63
-411*x-380 = 0
-411*x-380 = 0 // + 380
-411*x = 380 // : -411
x = 380/(-411)
x = -380/411
x = -380/411
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