Answer by JKismyhusbandbae:
Substitute j and k.
2(-8)(3)-(3)
[tex]\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:2\left(-8\right)\left(3\right)\\=-48-\left(3\right)\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:-48-\left(3\right)\\=-51[/tex]