Question 935458
3z/10-9=-8


{{{3z/10-9=-8}}}
{{{10(3z/10-9)=10(-8)}}}
{{{3z-90=-80}}}
{{{3z=-80+90}}}
{{{3z=10}}}
{{{z=10/3}}}



Note that exact notation is important.  3z/(10-9)=-8, showing as {{{3z/(10-9)=-80}}} would have a different solution.