Question 887127
Just simplify each equation and put into the same format.  Comparison will then be easy to do.


Your given equation to start is {{{-2m - 5m - 8 = 3 + (-7) + m}}};
Solution steps for that
{{{-7m-8=-4+m}}}
{{{-7m-m-8=-4}}}
{{{-8m-8=-4}}}
{{{-8m=-4+8}}}
{{{8m=-4}}}
Or even further,
{{{m=-1/2}}}.


Your choices are equations using just m to power 1 and constants.  Any which have solution of {{{m=-1/2}}} are equivalent to your given equation.