[tex]-10 =-2+ \dfrac{1}{2} d[/tex]
[tex]-10=-2+ \dfrac{d}{2} [/tex]
[tex]-10= \dfrac{d}{2} -2[/tex] [tex]Regroup \ terms[/tex]
[tex]-10+2= \dfrac{d}{2} [/tex] [tex]Add \ 2 \ to \ both \ sides[/tex]
[tex]-8= \dfrac{d}{2} [/tex]
[tex]-8*2=d [/tex] [tex]Multiply \ both \ sides \ by \ 2[/tex]
[tex]d=-16[/tex]
