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x in (-oo:+oo)
(3/4)*(x-3)+(2/5)*(x-2) = 1/14 // - 1/14
(3/4)*(x-3)+(2/5)*(x-2)-(1/14) = 0
(3/4)*(x-3)+(2/5)*(x-2)-1/14 = 0
3/4*(x-3)+2/5*(x-2)-1/14 = 0
(3/4*14*(x-3))/14+(2/5*14*(x-2))/14-1/14 = 0
3/4*14*(x-3)+2/5*14*(x-2)-1 = 0
161/10*x-427/10-1 = 0
161/10*x-437/10 = 0
(161/10*x-437/10)/14 = 0
(161/10*x-437/10)/14 = 0 // * 14
161/10*x-437/10 = 0
161/10*x-437/10 = 0 // + 437/10
161/10*x = 437/10 // : 161/10
x = 437/10/161/10
x = 19/7
x = 19/7
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