Find the value of $m+9$m+9 when $m=3$m=3.
Find the value of $9+m$9+m when $m=3$m=3.
Find the value of $x-2$x−2 when $x=8$x=8.
Find the value of $8-c$8−c when $c=1$c=1.
substitute integer, simple rational and irrational numbers in exact form into expressions, including rules of functions and relations, and evaluate these by hand