Find the value of $v+9$v+9 when $v=-8$v=−8.

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 $2-r$2−r when $r=-3$r=−3.

Form and solve simple linear equations