whaT equation cab be equivalent to -2m - 5m - 8 = 3 + (-7) + m?

 -2m - 5m - 8 = 3 + (-7) + m   combine like terms

-7m - 8  =  -4 + m        add 7m, 4 to both sides

-4  = 8m       divide both sides by 8

-4/8  = -1/2  = m