Question 635307
{{{y=8-3x/2}}}...............(1)
{{{y=3x/4-1}}}...............(2)
Substitute the value of y from (1) to (2)
{{{8-3x/2=3x/4-1}}}
{{{(16-3x)/2=(3x-4)/4}}}
{{{(4)(16-3x)/2=3x-4}}}
{{{cross(4)(16-3x)/cross(2)=3x-4}}}
{{{(2)(16-3x)=3x-4}}}
{{{32-6x=3x-4}}}
{{{-6x-3x=-4-32}}}
{{{-9x=-36}}}
{{{-9x/-9=-36/-9}}}
{{{cross(-9)x/cross(-9)=cross(-36)/cross(-9)}}}
{{{x=4}}}

Put the value of x in (1)
{{{y=8-3x/2}}}...............(1)
{{{y=8-3(4)/2}}}
{{{y=8-12/2}}}
{{{y=8-cross(12)/cross(2)}}}
{{{y=8-6}}}
{{{y=2}}}

x,y=4,2



Check
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Put the value of x and y in (1)
{{{y=8-3x/2}}}...............(1)
{{{2=8-3(4)/2}}}
{{{2=8-12/2}}}
{{{2=8-cross(12)/cross(2)}}}
{{{2=8-6}}}
{{{2=2}}}

Put the value of x and y in (2)
{{{y=3x/4-1}}}...............(2)
{{{2=3(4)/4-1}}}
{{{2=3cross(4)/cross(4)-1}}}
{{{2=3-1}}}
{{{2=2}}}