Friday, April 30th 6.13 Equations Quiz What would be the correct way to solve the equation below? A Add 7 to both sides of the equation. B Subtract 7 to both sides of the equation. C Divide both sides of the equation by 7. D Subtract 21 from both sides of the equation. ОА​

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?