Question 544876
{{{(11-a)/4=4}}}
Multiply by 4 both sides
{{{(4)(11-a)/4=4(4)}}}
{{{cross(4)(11-a)/cross(4)=16)}}}
{{{11-a=16)}}}
Subtract 11 from both sides
{{{-11+11-a=16-11}}}
{{{cross(-11)+cross(11)-a=16-11}}}
{{{-a=5)}}}
Multiply by -1 both sides
{{{-a(-1)=5(-1)}}}
{{{a=-5}}}


Check
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{{{(11-a)/4=4}}}
Put the value of a in above equation
{{{(11-(-5))/4=4}}}
{{{(11-(-5))/4=4}}}
{{{16/4=4}}}
{{{cross(16)/cross(4)=4}}}
{{{4=4}}}