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x in (-oo:+oo)
(1/2)*(4*x+8) = (3/4)*(12*x+16) // - (3/4)*(12*x+16)
(1/2)*(4*x+8)-((3/4)*(12*x+16)) = 0
(1/2)*(4*x+8)+(-3/4)*(12*x+16) = 0
1/2*(4*x+8)-3/4*(12*x+16) = 0
1/2*(4*x+8)-3/4*(12*x+16) = 0
-7*x-8 = 0
-7*x-8 = 0
-7*x-8 = 0 // + 8
-7*x = 8 // : -7
x = 8/(-7)
x = -8/7
x = -8/7
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