Question 328283
{{{ 9y^2+4y=0 }}}
{{{y(9y+4)=0}}}
divide by y
{{{y(9y+4)/y=0}}}
{{{9y+4=0}}}
add -4 to both sides
{{{9y+4-4=-4}}}
{{{9y=-4}}}
divide by 9 both sides
{{{9y/9 = -4/9}}}
{{{y=-4/9}}}