Question 74368
{{{ 2x = 3 - x}}}Add x to both sides
{{{3x=3}}}Divide both sides by 3
{{{x=1}}}Plug this into x
{{{2y = 12 - x }}}
{{{2y = 12 - (1) }}}
{{{2y=11}}}
{{{y=11/2}}}
So our solution is (1,11/2)
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Check:
{{{ 2(1) = 3 - 1}}}
{{{ 2 = 2}}}works
{{{2y = 12 - x }}}plug in x=1 and y=11/2
{{{cross(2)(11/cross(2)) = 12 - 1 }}}
{{{11 = 11 }}}works