Question 755917
Begin by expanding all the brackets

{{{(6x-9)+(8-4x)}}}

then equate common factors

{{{6x-4x=2x}}} {{{-9+8=-1}}} therefore {{{(2x)-1=0}}}

Add 1 to both sides

{{{(2x)-1+1=0+1}}} or {{{2x=1}}}

then divide both sides by 2

{{{(2x)/2=1/2}}} or {{{x=1/2}}}

Putting 1/2 back into the equation

{{{3*(2(1/2)-3)+4(2-1/2)=0}}}

2*1/2=1 and 2-1/2=1.5

{{{3*(1-3)+4*(1.5)=0}}}

1-3=-2

{{{3*-2=-6}}}

{{{4*1.5=6}}}

{{{-6+6=0}}}