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x in (-oo:+oo)
(2*x+1)/14-((3*x+4)/7) = (x-1)/2 // - (x-1)/2
(2*x+1)/14-((3*x+4)/7)-((x-1)/2) = 0
(2*x+1)/14+(-1*(3*x+4))/7+(-1*(x-1))/2 = 0
(2*7*(2*x+1))/(2*7*14)+(-1*2*14*(3*x+4))/(2*7*14)+(-1*7*14*(x-1))/(2*7*14) = 0
2*7*(2*x+1)-1*2*14*(3*x+4)-1*7*14*(x-1) = 0
98-56*x-98*x-98 = 0
-154*x = 0
(-154*x)/(2*7*14) = 0
(-154*x)/(2*7*14) = 0 // * 2*7*14
-154*x = 0
-154*x = 0 // : -154
x = 0
x = 0
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