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a in (-oo:+oo)
a/26+2*a-5.5 = a/13+200/13+4/13 // - a/13+200/13+4/13
a/26+2*a-(a/13)-(200/13)-(4/13)-5.5 = 0
a/26+2*a-(a/13)-200/13-4/13-5.5 = 0
51/26*a-21.19230769 = 0 // + 21.19230769
51/26*a = 21.19230769 // : 51/26
a = 21.19230769/51/26
a = 10.80392158
a = 10.80392158
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