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x in (-oo:+oo)
x = (1/3)*x+(1/4)*x+(1/5)*x+1/8+1+10 // - (1/3)*x+(1/4)*x+(1/5)*x+1/8+1+10
x-((1/3)*x)-((1/4)*x)-((1/5)*x)-(1/8)-10-1 = 0
x+(-1/3)*x+(-1/4)*x+(-1/5)*x-1/8-10-1 = 0
13/60*x-89/8 = 0 // + 89/8
13/60*x = 89/8 // : 13/60
x = 89/8/13/60
x = 1335/26
x = 1335/26
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