Answer: [tex]r=\frac{s+33}{7}[/tex]
Step-by-step explanation:
s = 7r -33. add 33 to both sides +33 -33 =0 ."cancels"
s + 33 = 7r divide both sides by 7 7r/7 7/7 = 1 'cancels' and leaves r
(s + 33) / 7 = r
[tex]r=\frac{s+33}{7}[/tex]
