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

Find the value of $m-2$m−2 when $m=-7$m=−7.

Find the value of $9+u$9+u when $u=-5$u=−5.

Find the value of $2-r$2−r when $r=-3$r=−3.

Form and solve simple linear equations