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x in (-oo:+oo)
(2*x)/10-((3-x)/14) = (x+2)/5-(1/2) // - (x+2)/5-(1/2)
(2*x)/10-((3-x)/14)-((x+2)/5)+1/2 = 0
(-1*(3-x))/14+(-1*(x+2))/5+x/5+1/2 = 0
(-1*2*5*(3-x))/(2*5*14)+(-1*2*14*(x+2))/(2*5*14)+(2*14*x)/(2*5*14)+(1*5*14)/(2*5*14) = 0
2*14*x-1*2*5*(3-x)-1*2*14*(x+2)+1*5*14 = 0
28*x-18*x-86+70 = 0
10*x-86+70 = 0
10*x-16 = 0
(10*x-16)/(2*5*14) = 0
(10*x-16)/(2*5*14) = 0 // * 2*5*14
10*x-16 = 0
10*x-16 = 0 // + 16
10*x = 16 // : 10
x = 16/10
x = 8/5
x = 8/5
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