Jana used 22.5 gallons of water in the shower this amount is 7.5 gallons less than the amount she used for washing clothes right and solve an equation to find the amount of water jan used to wash clothes

22.5 (shower) = X (variable used in place of the amount of water she uses to wash clothes) - 7.5 (the amount she used in the shower is 7.5 gallons less than she uses for washing clothes)
22.5 = X - 7.5 《 This is the equation.
Solve is by adding 7.5 to both sides to cancel out the negative 7.5 and you get (X = 30). Hope this helps.

Dwould be the answer