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x in (-oo:+oo)
(4*x+3)/4 = 2*x+7 // - 2*x+7
(4*x+3)/4-(2*x)-7 = 0
(4*x+3)/4-2*x-7 = 0
(4*x+3)/4+(-2*4*x)/4+(-7*4)/4 = 0
4*x-2*4*x-7*4+3 = 0
3-4*x-28 = 0
-4*x-25 = 0
(-4*x-25)/4 = 0
(-4*x-25)/4 = 0 // * 4
-4*x-25 = 0
-4*x-25 = 0 // + 25
-4*x = 25 // : -4
x = 25/(-4)
x = -25/4
x = -25/4
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