3(3+x)+6(1+x)/2x =3/2
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3(3+x)+6(1+x)/2x=3/2
3x+9+6+6x/2x=3/2
3x+9+6+6x=3/2×2x
3x+6x+9+6=3x
9x+15=3x
9x-3x= -15
6x= -15
x= -15/6
x= -5/2
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