Question 526095
{{{7/3-x/3=x/4}}} 
{{{7/3-x/3-x/4=0}}} 
Take LCM or LCD
{{{(4*7-4*x-3*x)/12=0}}} 
{{{(28-4x-3x)/12=0}}} 
{{{(28-7x)/12=0}}}
Multiply by 12 both sides
{{{(12*(28-7x)/12)=(0*12)}}} 
{{{((cross(12))*(28-7x)/(cross(12)))=(0*12)}}}
{{{28-7x=0}}} 
{{{-7x=-28}}} 
Divide by -7 both sides
{{{-7x/-7=-28/-7}}} 
{{{(cross(-7x))/(cross(-7))=(cross(-28))/(cross(-7))}}} 
{{{x=4}}}