1. [tex]\mathrm{Group\:like\:terms} \ \textgreater \ 24h-10h+3d+8d[/tex]
[tex]\mathrm{Add\:similar\:elements:}\:24h-10h=14h \ \textgreater \ 14h+3d+8d[/tex]
[tex]\mathrm{Add\:similar\:elements:}\:3d+8d=11d \ \textgreater \ 14h+11d[/tex]
2. [tex]\mathrm{Group\:like\:terms} \ \textgreater \ 12s+4s-2+4[/tex]
[tex]\mathrm{Add\:similar\:elements:}\:12s+4s=16s \ \textgreater \ 16s-2+4[/tex]
[tex]\mathrm{Add/Subtract\:the\:numbers:}\:-2+4=2 \ \textgreater \ 16s+2[/tex]
Hope this helps!
