Question 106324
{{{(2/3)A-(3/4)A=(3/4)A}}}

{{{(2/3 -3/4)A = (3/4) A}}}........eliminate {{{A}}} on both sides

{{{((2*4-3*3)/12)=(3/4))}}}

{{{((8-9)/12)=(3/4))}}}

{{{((-1)/12)=(3/4))}}}...........both sides multiply by {{{12}}}

{{{((-1)12/12)=12(3/4))}}}...........

{{{(-1)=3*3)}}}...........

{{{-1= 9}}}........... {{{NOT equal}}}