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a in (-oo:+oo)
(11/10)*(3*a-10) = (-6/5)*a // - (-6/5)*a
(11/10)*(3*a-10)-((-6/5)*a) = 0
(11/10)*(3*a-10)+(6/5)*a = 0
11/10*(3*a-10)+(6*a)/5 = 0
(11/10*5*(3*a-10))/5+(6*a)/5 = 0
11/10*5*(3*a-10)+6*a = 0
45/2*a-55 = 0
(45/2*a-55)/5 = 0
(45/2*a-55)/5 = 0 // * 5
45/2*a-55 = 0
45/2*a-55 = 0 // + 55
45/2*a = 55 // : 45/2
a = 55/45/2
a = 22/9
a = 22/9
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