Question 123400
{{{150=2x+5y}}}
{{{150=2x+5(3x)}}}
{{{150=2x+15x}}}
{{{150=17x}}}
{{{highlight(x=150/17=8.8)}}}
{{{y=3x}}}
{{{y=3(150/17)}}}
{{{highlight(y=450/17=26.5)}}}
or graphically
{{{ graph( 300, 300, -10, 40, -10, 40, 30-(2x)/5,3x) }}}